Thumper Impact Tool SFK - Brass
Thumper Impact Tool SFK - Brass
Thumper Impact Tool SFK - Brass

Thumper Impact Tool SFK - Brass

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Thumper Impact Tool: Piston Power

These ain't your grandpa's brass knuckles. Forged from high-quality brass and intricately engraved with a motorcycle piston design, these gearhead specials are a statement piece for the biker with an edge.

Built to Last

Crafted with precision and care, these knuckles are as tough as they look. The solid brass construction can withstand even the most intense impacts, making them a reliable tool for self-defense.

A Conversation Starter

But the Thumper Impact Tool are more than just self-defense tools. They're a conversation starter, a way to show off your love for motorcycles and all things badass. When you rock these knuckles, you're letting the world know that you're not to be messed with.


  • Made from high-quality brass
  • Intricate motorcycle piston engraving
  • Solid construction for maximum impact
  • Unique and eye-catching design

Whether you're a biker, a mechanic, or just someone who appreciates quality craftsmanship, the Thumper is the perfect accessory for you. Order yours today!

P.S. This impact tool also makes a great gift for the motorcycle enthusiast in your life.


  • Weight: 3 oz
  • 1" diameter finger hole
  • Stonewashed finish
  • 1/4" hex bit driver at the base
  • Lanyard hole