25 Tooth 4-Hole Freewheel Sprocket for 1/2" x 1/8" Bicycle Chain
- Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy
- For 1/2"x1/8" (#410) Bicycle Chain
- 25 Teeth
- F4 Mounting Pattern
- 4.258" OD
- 2.125" ID
- 2.559" Bolt Circle Diameter
- Four 0.244" ID Bolt Holes