Synchronous Pulley; 1" Belt Width; 1/2 Inch Belt Pitch; H Belt Style; 28 Teeth; 1-5/16" Face Width; Rough Bore; 4-45/64" Flange OD; 4.402" Outside Diameter; 4.456" Pitch Diameter; No Keyway; No Bushing; Yes Minimum Plain Bore; 2-5/8"

Roller Chain Sprocket; 12B-1 Chain; 28 Teeth; 1 Row of Teeth; No Hardened Teeth; 180.492MM Outside Diameter; 170.14MM Pitch Diameter; B-Hub One Side; Rough Bore Mount; No Bushing; 19.05MM Chain Pitch; ISO Roller Chain; No Keyway; Steel Material

Synchronous Pulley; 1/8" Belt Width; 2/25" Belt Pitch; MXL Belt Style; 28 Teeth; 0.26" Face Width; Rough Bore; 0.895" Flange OD; 0.693" OD; 0.713" Pitch Diam; No Keyway; No Bushing; Yes Minimum Plain Bore; 0.25" Max Bore

Synchronous Pulley; 50MM Belt Width; 8 MM Belt Pitch; 8M-50 Belt Style; 28 Teeth; 60.325MM Face Width; Rough Bore; 70.079MM Outside Diameter; 71.298MM Pitch Diameter; No Keyway; No Bushing; Minimum Plain Bore

Synchronous Pulley; 1/4" Belt Width; 1/5" Belt Pitch; XL Belt Style; 28 Teeth; 9/16" Face Width; Rough Bore; 2" Flange OD; 1.763" OD; 1.783" Pitch Diam; No Keyway; No Bushing; Yes Minimum Plain Bore; 0.75" Max Bore