Made of stainless steel, very solid , unbreakable! 24mm Ultra-Thick, grip feeling is very comfortable The thickness can guarantee your finger's safety Fit for 4 fingers Frosting Finish CNC processing , all edges are polished very carefully Detachable parts, DIY feasible. This Black EDC Knuckles is extremely good for self defense purpose Weight:180g ⚠️ Important Notice This product is manufactured and sold strictly as an industrial hardware accessory, decorative desktop paperweight, and collectible gear piece. Please review and ensure full compliance with your local laws and regulations regarding the carry and possession of solid metal pocket tools before finalizing your purchase. The buyer assumes all regional legal responsibilities.