Single Finger G10 Fiberglass Plastic Brass KnucklesMade of G10 fiberglass material, light but very solid Ergonomic design, amiable for your fingers One Piece CNC processing, all edges have chamfers 12mm Super Thickness, will bring a better comfortable grip feel Great Knuckles Weapon Size: 55mm x 33mm x 12mm Big holes, can fit for fat fingers Only 32g, very light Legal in many regions