This Round Ended Key Stock Assortment is equipped with a plastic box for easy carry and store, you can classify these feather keys in an organized manner, and take them out easily and conveniently This Round Ended Feather Key Set has an exquisite workmanship to provide a great experience for you, and there's no burrs on the surface, very smooth and accurate, no worry about hurting your during the working process This Key Stock has a widely use during daily life. It is mainly used to fasten the equipment disassembled frequently, and it fits into a mating key-way to transmit torque between shafts and hubs or bushings Combine a mix size of 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 30mm, satisfy your different needs. Rust-proof, wear-resistant, and high expanding ability. colour: black material: stainless steel size: 3 4 5 6mm Package Contents: 1 x Box of Round Ended Feather Key(included 140pcs) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.