Made of Bakelite material, new one is a little smelly, but will go odorless graduallyFashion EDC designOne-Piece CNC processing, all edges are treated smoothly19mm Ultra Thickness, will bring very comfortable grip feelGreat NON METAL KNUCKLESSize:112mm x 74mm x 19mmBig holes, can fit for fat fingersOnly 96g, very light FAQ Can you fit knuckles for smaller hands? This one can fit both small hand and big hands, don't worry ⚠️ Important NoticeThis 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.