➤【Set Include】: 7 size of M3 M4 M5 M6 M8 M10 M12 total 260pcs in a transparent box, applicable to different sizes of fasteners
➤【 Material 】: High Quality 65Mn metal steel, anti-corrosion and durable
➤【Type】: High Quality Internal Tooth Starlock Washers Kit
➤【Wide Application】: Widely used in machinery equipment, industrial production of shock absorption and insulation,can meet your different needs in daily life
➤【Feature】: A Lock washer exerts a spring force between the fasteners head and the substrate to create more friction and resistance to rotation