Sprocket Wheel Set, Product Type Sprocket Wheel Set, Chain Number 80, Bearing Type Ball, For Number of Strands Single, For Chain Pitch 1 in, Idler Bolt Thread Size M20, Idler Hole System of Measurement Metric, Length through Bore 12 mm, Number of Sprockets 1, Number of Teeth 13, Sprocket Width 12 mm, Standards ANSI, DIN 8187, ISO 16 B-1, Bearing Closure Double Shielded, Bore Diameter 20 mm, Compatible with Brand Rosta, Compatible with Grainger Part Number 798K96