Multiple sizes: M3 x 3 mm, M3 x 4 mm, M3 x 6 mm, M4 x 4 mm, M4 x 6 mm, M5 x 5 mm, M5 x 8 mm, M6 x 6 mm, M6 x 10 mm, M8 x 8 mm. Stainless steel material: wear-resistant, difficult to oxidize, difficult to deform, and durable. Standard metric system: the thread is clear and sharp, easy to screw in and difficult to strip. Convenient and practical: the plastic box packaging is easy to carry, the classification is clear, at a glance, it is convenient for you to easily replace lost or damaged set screws. Application: set screws are widely used in the maintenance and replacement of door handles, brackets, lamps, faucets, knobs, and other electrical appliances in small repair shops such as houses, shops, garages, etc.