Synchronous Pulley; 30MM Belt Width; 8 MM Belt Pitch; 8M-30 Belt Style; 20 Teeth; 38MM Face Width; Rough Bore; 49.56MM Outside Diameter; 50.93MM Pitch Diameter; No Keyway; No Bushing; Yes Minimum Plain Bore

Roller Chain Sprocket; 08B-1 Chain; 20 Teeth; 2 Row of Teeth; Hardened Teeth; 87.808MM Outside Diameter; 81.18MM Pitch Diameter; A-Double Single; Bushed Mount; 1215 Bushing; 12.7MM Chain Pitch; ISO Roller Chain; Keyway; Steel Material

Synchronous Pulley; 1" Belt Width; 1/2 Inch Belt Pitch; H Belt Style; 20 Teeth; 1-5/16" Face Width; Rough Bore; 3.129" Outside Diameter; 3.183" Pitch Diameter; No Keyway; No Bushing; Yes Minimum Plain Bore

Roller Chain Sprocket; 10B-2 Chain; 20 Teeth; 2 Row of Teeth; Hardened Teeth; 109.753MM Outside Diameter; 101.48MM Pitch Diameter; B-Hub One Side; Rough Bore Mount; No Bushing; 15.875MM Chain Pitch; ISO Roller Chain; No Keyway; Steel Material

Synchronous Pulley; 2" Belt Width; 1/2 Inch Belt Pitch; H Belt Style; 20 Teeth; 2-11/32" Face Width; Rough Bore; 3.129" Outside Diameter; 3.183" Pitch Diameter; No Keyway; No Bushing; Yes Minimum Plain Bore