Chain Rider Set, 8-1/2 mm Bore Dia.

Chain Rider Set, Product Type Chain Rider Set, For Chain Number 40, For Number of Strands Single, For Chain Pitch 1/2 in, Chain Rider Width 48 mm, Idler Bolt Thread Size M10, Idler Hole System of Measurement Metric, Length through Bore 55 mm, Number of Chain Riders 1, Standards ANSI, DIN 8187, ISO 08 B-1, Bearing Closure Double Shielded, Bore Diameter 8 1/2 mm, Chain Number 40, Compatible with Brand Rosta, Compatible with Series 15-18