60 Tooth 4-Hole Freewheel Sprocket for 1/2" x 1/8" Bicycle Chain 60 tooth 4-hole freewheel sprocket for 1/2"x1/8" (#410) bicycle chain. 9.840" OD2.125" ID2.559" bolt circle diameter. Four 0.244" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
65 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1) 65 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 10.478" OD2" ID2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
65 Tooth 4-Hole Freewheel Sprocket for 1/2" x 1/8" Bicycle Chain 65 tooth 4-hole freewheel sprocket for 1/2"x1/8" (#410) bicycle chain. 10.478" OD2.125" ID2.559" bolt circle diameter. Four 0.244" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
70 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1) 70 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 11.752" OD2" ID2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
70 Tooth 4-Hole Freewheel Sprocket for 1/2" x 1/8" Bicycle Chain 70 tooth 4-hole freewheel sprocket for 1/2"x1/8" (#410) bicycle chain. 11.75" OD2.125" ID2.559" bolt circle diameter. Four 0.244" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
75 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1) 75 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 12.229" OD2" ID2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
75 Tooth 4-Hole Freewheel Sprocket for 1/2" x 1/8" Bicycle Chain 75 tooth 4-hole freewheel sprocket for 1/2"x1/8" (#410) bicycle chain. 12.229" OD2.125" ID2.559" bolt circle diameter. Four 0.244" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
80 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1) 80 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 13" OD2" ID2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
80 Tooth 4-Hole Freewheel Sprocket for 1/2" x 1/8" Bicycle Chain 80 tooth 4-hole freewheel sprocket for 1/2"x1/8" (#410) bicycle chain. 13" OD2.125" ID2.559" bolt circle diameterFour 0.244" ID bolt holesMade of aircraft-grade tempered (hardened) aluminum alloy.
85 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1) 85 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 13.822" OD2" ID2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
85 Tooth 4-Hole Freewheel Sprocket for 1/2" x 1/8" Bicycle Chain 85 tooth 4-hole freewheel sprocket for 1/2"x1/8" (#410) bicycle chain. 13.822" OD2.125" ID2.559" bolt circle diameter. Four 0.244" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
90 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1) 90 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 14.618" OD2" ID, 2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.