Check the listing for details. 10Pcs Round Ended Feather Key, 3x3x14mm Carbon Steel Parallel Drive Shaft Keys. Condition: New. Listed at 13.16 USD. Description:Material - The machine keyway is made of carbon steel with precision machining, which has good wear resistance, corrosion resistance, and oxidation resistance. It does not require washers or grinding, making it a good part for most mechanical equipment maintenance or replacementFeature - The round key stock is designed for fastening the frequent disassembly equipment. It transmits torque between the shafts and hubs or bushings by matching the keyway. The high torque transmission capacity and uniform load distribution along the shaft effectively prevent relative sliding or rotation and ensure the stability of the mechanical structureEasy to Install - The parallel drive shaft keys are easy to install. You only need to insert the key into the gap between the shaft and the hub.