45 Tooth 4-Hole Freewheel Sprocket for 1/2" x 1/8" Bicycle Chain
- 45 tooth 4-hole freewheel sprocket for 1/2"x1/8" (#410) bicycle chain.
- 7.95" OD
- 2.125" ID
- 2.559" bolt circle diameter.
- Four 0.244" ID bolt holes.
- Made of aircraft-grade tempered (hardened) aluminum alloy.