Search  for anything...

KastKing Speed Demon Pro Fillet Knife - Razor Sharp G4116 German Stainless-Steel Blade, Professional Level Knives for Filleting and Boning, Non-Slip Handles, Includes Protective Sheath

  • Based on 1,020 reviews
Condition: New
Checking for the best price...
$21.24 Why this price?
Save $3.75 was $24.99

Buy Now, Pay Later


As low as $5 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, May 21
Order within 6 hours and 32 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Color: B: 6'' fillet knife


Features

  • Razor Sharp Stainless Blades All new KastKing fishing fillet knives and the 5 Bait Knife utilize premium, razor sharp G4116 German Stainless-Steel blades with a beautiful black finish. KastKing fillet knives will maintain their edge longer in both fresh and saltwater applications and make the job of cutting baits, filleting fish of all sizes and steaking large game fish easier than ever before.
  • Non-Slip Super Polymer Grip - We use the most comfortable and slip-resistant, super polymer grips for your safety and comfort. These handles feel great in your hand and ensure that you always have a solid grip on your fillet knife. These handles also clean up easily and stay looking good longer.
  • The Right Knife For The Job - The 5 Bait Knife is stiff and strong, it has a serrated top edge that makes cutting frozen bait quick and easy. The razor-sharp leading edge allows the fisherman to easily prepare both chunk and cut plug style baits. The 6, 7 & 9 Fillet Knives are not only sharp and but also have the perfect flexibility so the knife will follow natural contours for perfect fillets. The 9 Steaking Knife is a powerhouse for steaking big game fish like salmon, tuna and more.
  • Includes Protective Knife Sheath Each knife includes a light-weight and durable sheath to protect the blade and keep you safe in between jobs. The unique design of the sheath will lock the handle in for safety but removes easily when needed. The open slots in the sheath are design to allow water to drain easily so that your knives stay dry and sharp.
  • Affordable Innovation KastKing fishing knives are available in the most requested lengths and shapes so that youll always have the right tool for the job. Available from a beautiful 5 bait knife all the way to a tough 9 steaking knife for the biggest game fish. All KastKing fishing tools are covered by our total peace of mind warranty against the workmanship and materials for the original owner. We have total confidence in the quality of all KastKing fishing tools and so will you.

Recommended Uses For Product: Fishing, Steaking large game fish


Brand: KastKing


Model Name: Speed Demon Pro Fillet Knife


Special Feature: G4116 German Stainless-Steel Blade


Age Range (Description): Adult


Included Components: ‎Knife and Sheath


Handle Material: Super Polymer Grip


Color: B 6'' fillet knife


Blade Material: Stainless Steel


Style: Modern


Recommended Uses For Product: Fishing, Steaking large game fish


Brand Name: KastKing


Model Name: Speed Demon Pro Fillet Knife


Age Range Description: Adult


Included Components: ‎Knife and Sheath


Customer Package Type: Individually with Sheath


Manufacturer: Eposeidon


Part Number: Fishing Knives-4


Unit Count: 1 Count


Blade Length: 6 Inches


Item Weight: 0.4 Pounds


Item Length: 11.8 Inches


Size: FK-6"


Special Features: G4116 German Stainless-Steel Blade


Blade Shape: Drop Point


Blade Edge: Plain


Reusability: Reusable


Is Product Cordless: No


Color: B 6'' fillet knife


Style: Modern


Theme: Fishing


Handle Material: Super Polymer Grip


Blade Material: Stainless Steel


Product Care Instructions: Hand Wash Only


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Fillet knife
Color: B: 6'' fillet knife
Very sharp
Reviewed in the United States on January 11, 2026 by calvin

  • Sharp.
Color: B: 6'' fillet knife
Nice knife. Holds an edge
Reviewed in the United States on October 19, 2025 by Alan F. Spear

  • Good price
Color: B: 6'' fillet knife
Gift for a fisherman, works great
Reviewed in the United States on April 8, 2026 by Pat D

  • 6" and 7" models are the same size when sheathed
Color: B: 6'' fillet knife
The 6" and 7" filet knives use the exact same handle and sheath, meaning they pack/store the same. The knife itself is good. It's extremely light, the handle feels great, and the blade is good enough. The blade is flexible, but it is not a spring. Bend it enough and it will stay *slightly* bent, but it can be bent back. It does not come razor sharp. It can be sharpened, but the "titanium" laminate will eventually be impossible to avoid and start gumming up your sharpener ... show more
Reviewed in the United States on May 8, 2023 by Lloyd

  • Very sharp!
Color: B: 6'' fillet knife
Amazing knife. Cut right thru the fish with no effort! Comfortable grip.
Reviewed in the United States on December 14, 2024 by stephanie gharet

  • Great Value for the Money
Color: B: 6'' fillet knife
Removing fat and other "icky" things from chicken breasts, salmon, etc is so easy with this extremely SHARP knife. Also love the blade protector that comes with it. Never have to worry about slicing my fingers when I reach into the drawer to get it out.
Reviewed in the United States on March 22, 2025 by Pom Pal

  • Slice 'Em Up
Color: B: 6'' fillet knife
This knife works great. Not as sharp as i wanted out of the box, but sliding it through the sharpener 10 times brings that edge back up really nice. I catch smaller fish off the ocean pier like mackerel, big jacksmelts, croaker, large barred sand bass, and bonito. Once in a while my uncles bring over rock fish. The tip is very sharp for that initial slice and the edge on the blade slides nicely during the filet process. As a habit I put the knife through the sharpener in between fish. Either way, this knife is easy to hold and slices just I was wanted. ... show more
Reviewed in the United States on November 18, 2021 by Mohawk Mike

  • Beginners knife
Color: B: 6'' fillet knife
Great size for a beginner at filleting fish.
Reviewed in the United States on September 15, 2025 by Carla Burt

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...