Made of high quality 304 Stainless Steel and nylon insert, workmanship, greatly enhancing the function of release and shockproof.Function: The Lock Nuts a secure hold (reducing slippage) and a lasting hold for any project.Standard hexagon type design, easy to install or remove.Applications: Mainly suitable for machinery, electric appliance, electronic/computer, automobile, sports equipment etc. hardware fastening accessories.Function: The Lock Nuts a secure hold (reducing slippage) and a lasting hold for any project.colour:Silver + blueMaterial:Stainless steel + nylonPackage Contents:60 * M3 Hex Lock Nut20 * Hex Lock Nut20 * M5 Hex Lock Nut30 * M6 Hex Lock Nut12 * M8 Hex Lock Nut8 * M10 Hex Lock NutOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.