Attributes . 60-2 Chain; 20 Teeth; 2 Rows of Teeth; Hardened Teeth; 5.186" Outside Dia; 4.794" Pitch Dia; B-Hub One Side; Rough Bore Mount; 3/4" Chain Pitch; ANSI Roller Chain Chain Type; No Keyway; Steel Material; 2-1/2" Max Bore . Names