A2

72 Tooth Sprocket for #41 and #420 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #41 and #420 Chain 72 Teeth F4 Mounting Pattern 54.1mm ID 65mm Bolt Circle Diameter Four 6.2mm ID Bolt Holes

72 Tooth Sprocket for #41 and #420 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #41 and #420 Chain 72 Teeth G1 Mounting Pattern 11.8" OD 2" ID 2.875" Bolt Circle Diameter Four 3/8" ID Bolt Holes

72 Tooth Sprocket for #410 (1/2" x 1/8") Bicycle Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #410 (1/2" x 1/8") Bicycle Chain 72 Teeth F4 Mounting Pattern 54.1mm ID 65mm Bolt Circle Diameter Four 6.2mm ID Bolt Holes

72 Tooth Sprocket for #428 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #428 Chain 72 Teeth F4 Mounting Pattern 54.1mm ID 65mm Bolt Circle Diameter Four 6.2mm ID Bolt Holes

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.

75 Tooth 2-1/8" Bore 5-Hole Sprocket for 1/2" x 1/8" Bicycle Chain 75 tooth bicycle chain sprocket. Made of aircraft-grade tempered (hardened) aluminum alloy.12.229" OD.2.125" IDFive 5.1mm ID mounting holes. Fits onto our 5-hole freewheel item # FWM-205. Compatible with 1/2" x 1/8" bicycle chain (#410 chain).

75 Tooth Sprocket for #35 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum AlloyFor #35 Chain75 TeethF5 Mounting Pattern9.172" OD2.125" IDFive 5.2mm ID Bolt Holes2.638" Bolt Circle Diameter

75 Tooth Sprocket for #41 and #420 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum AlloyFor #41 and #420 Chain75 TeethF5 Mounting Pattern12.3" OD2.125" ID2.638" Bolt Circle DiameterFive 5.25mm ID Bolt Holes

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.

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.

80 Tooth 2-1/8" Bore 5-Hole Sprocket for 1/2" x 1/8" Bicycle Chain 80 tooth bicycle chain sprocket. Made of aircraft-grade tempered (hardened) aluminum alloy.13" OD.2.125" IDFive 5.1mm ID mounting holes. Fits onto our 5-hole freewheel item # FWM-205. Compatible with 1/2" x 1/8" bicycle chain (#410 chain).

80 Tooth Sprocket for #35 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum AlloyFor #35 Chain80 TeethF5 Mounting Pattern9.770" OD2.125" IDFive 5.2mm ID Bolt Holes2.638" Bolt Circle Diameter