42 Tooth Sprocket for #410 (1/2" x 1/8") Bicycle Chain with F4 Mounting Pattern
- Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy
- F4 Mounting Pattern
- 42 Teeth
- For 1/2"x1/8" (#410) Bicycle Chain
- 54.1mm ID Bore
- Four 6.2mm ID Bolt Holes @ 90 Degrees
- 65mm Bolt Circle Diameter