Sprocket 410B12 x 5/8 K3/16 2S1/4-20
Sprocket 410B12 x K1/4 2S 5/16-18 PH1/4
Sprocket 410B18 x 1-1/4" Bore 1/4" KW 2S 5/16-18
Sprocket 410B9 x 5/8 K3/16 2S 1/4-20 CR