Sprocket Wheel Set Product Type Sprocket Wheel Set Chain Number 50 Bearing Type Ball For Number of Strands Single For Chain Pitch 5/8 in Idler Bolt Thread Size M12 Idler Hole System of Measurement Metric Length through Bore 12 mm Number of Sprockets 1 Number of Teeth 15 Sprocket Width 12 mm Standards ANSI DIN 8187 ISO 10 B-1 Bearing Closure Double Shielded Bore Diameter 12 mm Compatible with Brand Rosta Compatible with Grainger Part Number 798K95