MAKE-A-KEY STEEL 3/8X5/8|PRECISION's Keystock is used to provide driving torque between shafts and pulleys, gears, sprockets, etc. It can be used for new machinery general maintenance and shop repairs, and is a necessity in all applications where rotating power devices are used. Sizes are clearly marked on each piece. Meets ASTM A-108. Rockwell Hardness: B80/100
Unit of Measure=EA|Weight=2.3910|Brand=Precision Brand