Manufactured from case-hardened chromoly steel. 'Parkerized' surface treatment provides rust and corrosion resistance, leading to longer overall sprocket life. The same great quality that the OEM's have trusted since 1946.

Revised Edition No. 15, With All Illustrations And Tables Including, But Not Limited To: Annealing Brass Or Copper, Annealing Tool Steel, Apron, Automatic, Attaching Countershaft To Joists, Ball Race And Cone Making, Belting Of Lathe, Boring In The Lathe, Boring 30-Inch Flywheel, How To Braze, Calcu...