KastKing Speed Demon Pro Fillet Knife
- Item Length: 16.5 inches
- Handle Material: Thermoplastic Elastomers (TPE)
- Blade Edge: 420 Stainless Steel With Titanium Plating
- Item Weight: 4.08 pounds
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A long bladed fillet knife with a wet grip TPE handle, worth considering if you regularly fillet larger fish and want reach over a short utility blade.
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ASIN: B0C8TH872XCategory: Fillet Knives
Overview
The Speed Demon Pro is KastKing's fillet knife with a 16.5 inch overall length and a molded TPE handle for grip when hands are wet. It ships in orange for visibility around a boat deck, and the listing counts it as a single piece.
At 16.5 inches overall, this leans toward the longer end for fillet knives, useful for breaking down larger fish where a shorter blade would run out of length. The 1.85 kilogram listed weight is heavier than a typical single fillet knife, which suggests the figure covers the knife along with any included sheath or case rather than the blade alone.
- 16.5 inch overall length
- TPE non-slip handle
- Orange color for visibility
- Sold as a single piece
Who it's for
Anglers who clean larger fish species and want a longer blade span. Also suits anyone who prefers a soft grip handle over a bare polymer or wood one, since wet hands stay steadier on TPE.
Pros and cons
- Long 16.5 inch blade for larger fish
- TPE handle grips even when wet
- High visibility orange color
- Length may be excessive for small fish
- Listed weight suggests a case is included, not confirmed
Performance notes
The TPE handle is designed to stay grippy even when coated in fish slime or water, which is the main failure point of hard plastic handles. Blade length at 16.5 inches gives more reach for long fillet strokes on bigger fish, though that same length can be harder to control on small species.
Specifications
| Brand | KastKing |
|---|---|
| Dimensions & fit | |
| Item Length | 16.5 incheshigher than 95% of 20 fillet knives |
| Item Weight | 4.08 poundshigher than 96% of 46 fillet knives |
| Hand Orientation | Ambidextrous |
| Orientation | Vertical |
| Capacity & performance | |
| Age Range Description | Adult |
| Power & efficiency | |
| Power Source | Battery |
| Construction & materials | |
| Handle Material | Thermoplastic Elastomers (TPE) |
| Color | Orange |
| Blade Material | 420 Stainless Steel With Titanium Plating |
| Included components | |
| Customer Package Type | Frustration-Free Packaging |
| Unit Count | 1 |
| Included Components | Case, Charger, 2 Lithium-Ion Batteries, Knife & 4 Blades |
| Other details | |
| Blade Edge | 420 Stainless Steel With Titanium Plating |
| Blade Type | Fillet |
| Is Product Cordless | Yes |
| Blade Shape | Fillet |
| Recommended Uses For Product | Fishing, Outdoors |
| Reusability | Rechargeable |
| Special Features | Extended Battery Life, Lithium-Ion Battery With Power Level Display And Overcharge Protection, Charger With Full Charge Indicator, High Speed, High Torque Motor |
| Style | B: Guide Pack (4 Blades +2 Battery Packs) |
| Item Shape | Elongated |
| Set Name | Guide Pack |
| Product Care Instructions | Hand Wash Only |
| Theme | Fishing |
Closest rivals on specs
Rapala Heavy Duty Electric Fillet Knife 7.5 in- Item Weight 4.08 vs 1.8 pounds (+127%)
- Item Length 16.5 vs 9 inches (+83%)
RUNCL Fillet Knife Combo Set with Tackle Box- Item Weight 4.08 vs 1.98 pounds (+106%)
- Item Length 16.5 vs 6.1 inches (+170%)
HOSHANHO Fillet Knife 7 inch- Item Weight 4.08 vs 0.66 pounds (+518%)
- Item Length 16.5 vs 7 inches (+136%)
Frequently asked questions
How long is the KastKing Speed Demon Pro fillet knife?
It measures 16.5 inches overall.
What is the handle made of?
A thermoplastic elastomer (TPE) handle, intended to stay grippy when wet.