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Our entire team at Gerry’s are all experienced anglers and can help you choose the correct tackle for any fishing situation. Please drop us a message or give us a call if you need any help.
You can return unused standard items within 30 days for exchange or refund.
We check our prices weekly to ensure we can combine our fabulous service with the best prices. If you find an item cheaper and in stock somewhere else, drop us a a message in the chat box and we can see what we can do.
This item is available for next day delivery. You can pick this in the checkout.
We offer free post to any mainland UK address with a basket of more than £80. We also send all over the world and the best way to find out how much postage you will pay is in our checkout. Add the items to your basket and then add your address. Our checkout will automatically calculate your total.
We have come from a tiny fishing store and grown into one of the biggest fishing tackle retailers in the UK winning countless awards over the years. We are still a family business offer fabulous service online and in-store.
Spread the cost of larger orders over 6 or 12 month 0% APR. We also offer longer terms with APR charges via V12 finance. Available in the checkout.
You can make your next purchase a little easier on the wallet by splitting the total into 3 payments by using Klarna payments in the checkout.
“Need advice on tackle? Ask Bob”
Powered by a deep library of angling knowledge, the experience of thousands of anglers & indepth technical product specs. Available 24/7. Just Ask.
The Keitech Flex Chunk 3″ Medium in the #407T Delta Craw pattern is a high-performance jig trailer engineered to provide the perfect balance of volume, vibration, and visual realism. Written by Gerry’s Fishing, this description details how the 3″ Medium size bridges the gap between finesse micro-trailers and bulkier creature baits, making it a “go-to” choice for targeting big perch, zander, and pike in varied water conditions.
Model: Keitech Flex Chunk 3″ Medium
Color Pattern: #407T Delta Craw (A realistic, mottled brown/orange blend with subtle gold flecks, perfectly matching native crustacean life)
Size: 3 inches (Approx. 7.6 cm)
Lure Type: High-action jig trailer / Creature bait
Material: Custom dual-injection salted PVC plastics matrix
Scent Infusion: Heavily loaded with Keitech’s legendary, potent Natural Squid Scent
Packaging: Secure, rigid plastic blister tray packs (ensures the high-torque claws remain pristine)
Quantity: 6 baits per pack
High-Torque “Flex” Claws: The signature feature of the Flex Chunk 3″ is its oversized, curved C-shaped claws. These appendages are specially engineered to catch water and create a wide, rhythmic “thumping” pulse. Unlike flatter trailers that merely shimmer, the Flex Chunk creates a noticeable vibration that draws strikes from predators that rely heavily on their lateral line to track prey.
Dual-Injection Buoyancy Matrix: Keitech’s dual-injection process uses a buoyant, unsalted top section to keep the claws in a natural “defensive” posture, while the salted belly adds the necessary weight for accurate casting and a stable, horizontal swimming profile.
Flat-Back Geometry: The top side of the trailer is completely flat, allowing it to sit flush against the underside of a jig head’s hook shank. This ensures the trailer is perfectly streamlined, preventing the “spinning” or “twisting” that can occur with improperly rigged trailers, and providing a clean, cohesive silhouette that predators find more realistic.
Delta Craw Pattern (#407T): This specific color is a masterclass in imitation. The mottled brown-and-orange finish provides an earthy, organic look that excels in clear to stained water, while the fine gold flecks mimic the light-reflecting chitin of a live crayfish.
Specimen Perch “Search” Fishing: Pair the 3″ Flex Chunk with a 7g or 10g football jig or bladed jig. Its aggressive thumping action is ideal for covering water and triggering the predatory instinct of large, territorial perch.
River Zander Drops: Perfect for use on jig heads (4g–10g) in river channels. When zander are hugging the bottom, the buoyant claws float upward during the pause, creating a static, high-attraction target that is extremely effective in slow-to-moderate currents.
Weed-Edge Prospecting: The robust 3″ size is large enough to push through sparse weed growth. It serves as an excellent trailer for finesse jigs being worked along the edges of reed beds or lily pads, where pike and perch wait to ambush passing prey.
The “Defensive Flee” Retrieve: When working the Flex Chunk on a jig, use a “drag-and-pause” cadence. Drag the jig 3 feet across the bottom, then stop abruptly for 3 seconds. The buoyant claws of the 3″ Flex Chunk will float up into a “claws-up” defensive posture, while the jig head stays on the floor. This pause is the moment most specimen predators commit; the bait looks exactly like a crayfish that has just stopped to challenge an intruder.
For the 3″ version, we recommend a #1/0 or #2/0 hook on a finesse jig, football head, or bladed jig. The hook size is perfect for ensuring the trailer is securely held but remains flexible enough to allow the claws to move freely.
The 2″ version is designed for micro-jigging and situations where a tiny, subtle profile is needed. The 3″ Medium provides a larger, more substantial meal that displaces more water and creates a louder acoustic “thump,” making it the better choice when you are targeting larger predators or fishing in water with lower clarity.
Yes. The #407T Delta Craw is not a surface-painted color; it is a molded-in coloration process. The contrast, mottling, and fleck density remain consistent throughout the entire life of the bait, ensuring it looks just as effective after five catches as it does fresh out of the pack.
“Need advice on tackle? Ask Bob”
Powered by a deep library of angling knowledge, the experience of thousands of anglers & indepth technical product specs. Available 24/7. Just Ask.
Our entire team at Gerry’s are all experienced anglers and can help you choose the correct tackle for any fishing situation. Please drop us a message or give us a call if you need any help.
You can return unused standard items within 30 days for exchange or refund.
We check our prices weekly to ensure we can combine our fabulous service with the best prices. If you find an item cheaper and in stock somewhere else, drop us a a message in the chat box and we can see what we can do.
This item is available for next day delivery. You can pick this in the checkout.
We offer free post to any mainland UK address with a basket of more than £80. We also send all over the world and the best way to find out how much postage you will pay is in our checkout. Add the items to your basket and then add your address. Our checkout will automatically calculate your total.
We have come from a tiny fishing store and grown into one of the biggest fishing tackle retailers in the UK winning countless awards over the years. We are still a family business offer fabulous service online and in-store.
Spread the cost of larger orders over 6 or 12 month 0% APR. We also offer longer terms with APR charges via V12 finance. Available in the checkout.
You can make your next purchase a little easier on the wallet by splitting the total into 3 payments by using Klarna payments in the checkout.




Penn Chest Size Guide
Small (36″-37″)
Medium (38″-40″)
Large (42″-44″)
XLarge (46″-48″)
XXLarge (50″-52″)
Wader Waist Guide
Small (28″-30″)
Medium (30″-33″)
Large (34″-37″)
XLarge (37″-39″)
XXLarge (39″-42″)
3XLarge (42″-45″)
Kinetic/Westin Chest Size Guide
Small (36″-37″)
Medium (38″-40″)
Large (42″-44″)
XLarge (46″-48″)
XXLarge (50″-52″)
3XLarge (54″-56″)
Grundens Chest Size Guide
Small (36″-37″)
Medium (38″-40″)
Large (42″-44″)
XLarge (46″-48″)
XXLarge (50″-52″)
3XLarge (54″-56″)
Vass Chest Size Guide
Small (36″-38″)
Medium (38″-41″)
Large (42″-44″)
XLarge (45″-46″)
XXLarge (47″-48″)
3XLarge (49″-51″)
Trakker Chest Size Guide
Small (38-40″)
Medium (41-43″)
Large (44-46″)
Xlarge (47-49″)
XXLarge (50-52″)
XXXLarge (53-55″)
Korda Chest Size Guide
Small (36″-38″)
Medium (38″-41″)
Large (42″-44″)
XLarge (45″-46″)
XXLarge (47″-48″)
3XLarge (49″-51″)
Guy Cotten Chest Size Guide
Small (86 – 94cm)
Medium (94 – 102cm)
Large (102 – 110cm)
XLarge (110 – 124cm)
XXLarge (124 – 134cm)
3XLarge (134 – 154cm)
Fox Chest Size Guide
Small (36″-38″)
Medium (39″-41″)
Large (42″-44″)
XLarge (45″-47″)
XXLarge (48″-50″)
3XLarge (51″-54″)
4XLarge (55″-60″)
Nash Chest Size Guide
Small (36″-38″)
Medium (39″-41″)
Large (42″-44″)
XLarge (45″-47″)
XXLarge (48″-50″)
3XLarge (51″-54″)
4XLarge (55″-60″)
Aqua Chest Size Guide
Small (38-40″)
Medium (41-43″)
Large (44-46″)
Xlarge (47-49″)
XXLarge (50-52″)
XXXLarge (53-55″)
Guru Chest Size Guide
Small (36″-38″)
Medium (38″-41″)
Large (42″-44″)
XLarge (45″-46″)
XXLarge (47″-48″)
3XLarge (49″-51″)
Preston Chest Innovations Size Guide
Small (36″-38″)
Medium (38″-41″)
Large (42″-44″)
XLarge (45″-46″)
XXLarge (47″-48″)
3XLarge (49″-51″)
Trouser Waist Guide (Inches)
Small – 28″ – 32″
Medium 32″ – 34″
Large – 34″ – 36″
X-Large 36″ – 38″
XX-Large – 38″ – 42″
XXX-Large 42″ – 46″
XXXX-Large 46″ – 52″