4 Common Sizes: High quality wing nut kit, contains 4 most commonly used sizes: M4, M4, M6, M8, each size has 15 pieces, it is a great substitute for industrial and automotive fasteners. construction, and can also be used in your daily life Important Accessories. Durable Wing Nut: The wing nut is made of high quality materials and the surface is electroplated to provide strength, durability maximum life, rust and corrosion resistance. They can be used indoors and outdoors, won’t rust or corrode, and are much better than ordinary iron or carbon metals. Butterfly design: the appearance of our nut is similar to the wing of an airplane, so it is also called a wing nut. Designed for convenient hand tightening. Especially in the case of frequent tightening and convenient installation, the nut can be tightened by hand without any other tools. Fix Anything: the nut is tight and held in place . The cross section is wide enough, so there is enough space inside to make it easier to grip. Smooth