Stainless Steel Material-- These Round Ended Shaft Key Assortment is made of high quality stainless steel material, which is rust-proof, wear-resistant, and high expanding ability to ensure a long lasting use Various of Sizes Meet Different Needs-- Various of Sizes Meet Different Needs: These Round Ended Keys combine a variety of sizes to satisfy different needs. You can use the 8mm, 10mm, 12mm, 16mm, 20mm, 25mm and 30mm sizes of shaft keys for different projects upon different purposes Easy to Carry& Store-- Easy to Carry& Store: 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 Great Workmanship-- Great Workmanship: 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 fingers during the working process Widely Applications-- Widely Applications: 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 between shafts and hubs or bushings, Weight: 0.88 pounds, Manufacturer: WALFRONT