Internal Tooth Starlock, Machine Component, Starlock Washer, Shock Absorption Fasteners, Insulation Industry for Machine Maintenance Machinery Processing Specification: Item Type: Internal tooth starlock washerColour: Black Material: Manganese steel Uses: Widely used in shock absorption and insulation of mechanical equipment and industrial production Products Include: 40 x M10 20 x M12 50 x M6 50 x M8 40 x M4 40 x M3 40 x M5 Package List: 40 x M10 20 x M12 50 x M6 50 x M8 40 x M4 40 x M3 40 x M5 Made of manganese steel material, the washer is durable and practical. The product has a wide range of applications and can be installed on many different types of materials. internal tooth lock washer kit is easy to install, suitable for professional use. The washer is widely used in shock absorption and insulation of mechanical equipment and industrial production. Featured with performance and stable appearance, the product is a choice for you. Made of manganese steel material, the washer is durable and practical. The product has a wide range of applications and can be installed on many different types of materials. internal tooth lock washer kit is easy to install, suitable for professional use. The washer is widely used in shock absorption and insulation of mechanical equipment and industrial production. Featured with performance and stable appearance, the product is a choice for you.