Idler Roller Chain Sprocket, Bore Diameter 5/8 in, Chain Number 35, Sprocket Material Steel, Number of Teeth 20, Outside Diameter 2.59 in, Bearing Type Ball, For Chain Pitch 3/8 in, For Number of Strands Single, Length through Bore 23/32 in, Lubrication Multi-Temperature Quality Bearing Grease, Pitch Diameter 2.397 in, Sprocket Width 0.72 in, Standards ANSI, Teeth Heat Treatment Hardened Teeth