Picture a hedgehog curled into a single, solid ring of titanium — that's the spirit behind this little everyday-carry companion. We took the classic knuckle-duster silhouette, shrank it to one finger, and gave it a second job: a contoured edge that pops bottle caps wherever the evening takes you.

Forged from a titanium alloy, it weighs just 40.7 g and measures a slim 9.7 mm through the body, so it rides on a keyring and disappears until you need it. Titanium is naturally rust-proof and hypoallergenic — no green skin, no corrosion, happy to live in a pocket or a tackle box for years.

The hedgehog isn't only for looks. The curved spines and a sharpened tip concentrate force into a small contact area, while the 24 mm finger hole locks the ring snugly on your hand. Unlike a four-finger knuckle, this is a one-finger piece built for carry, not bulk.

Key Features & Specifications

• Material: Titanium alloy — light, rust-proof, hypoallergenic
• Form: Single-finger ring with hedgehog spine design
• Dimensions: 51 mm × 36 mm × 9.7 mm
• Finger hole: 24 mm diameter
• Weight: approx. 40.7 g
• Built-in tool: contoured edge doubles as a bottle opener
• Carry: keyring-ready everyday carry (EDC)

A note on finish: like all cast and machined metal, the surface may show faint tool marks or light polish traces. That's normal for solid-metal gear and part of its honest, made-to-be-carried character.

Explore more: the full Titanium Knuckles collection, other one-finger designs, or the solid brass hedgehog variant.