• Black knurled grip knobs, strong and durable. • Threaded design for easy installation. • Replacement accessories for lathe. • Fit most machine tools. • Sizes: M4, M5, M6; Length: 12 mm, 16 mm, 20 mm, 25 mm. • Material: Galvanized iron. • Includes 195 knurled screws of 12 sizes. • High quality, anti-corrosion, and good stability. • Non-slip for better control. • Easy installation without tools. • Use in woodworking, mechanical equipment, and more. • Suitable for body shop projects, electronic equipment, drill press, router tables, lathe machine, table saw, workshop machinery, door, lockers, cabinet, rack mount, furniture equipment, instruments, appliances.