Chain Coupling Cover; Aluminum; 8-3/16" Outside Diameter; 4" Width; 8018 Coupling Size; 2000RPM Maximum Speed

Chain Coupling Cover; Die-Cast Aluminum; 92MM Outside Diameter; 75MM Width; 4016 Coupling Size; 200 RPM Maximum Speed

Chain Coupling; Cover; Plastic; 6-3/8" Outside Diameter; 3-1/16" Width; 6018 Coupling Size; 3000 Maximum Speed (RPM)

Chain Coupling Cover; Die-Cast Aluminum; 142MM Outside Diameter; 106MM Width; 6018 Coupling Size; 100 RPM Maximum Speed

Chain Coupling; Cover; Plastic; 4" Outside Diameter; 2-5/16" Width; 4012 Coupling Size; 5000 Maximum Speed (RPM)