A2

36 Tooth Sprocket for #41 and #420 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum AlloyFor #41 and #420 Chain36 TeethG1 Mounting Pattern6.1" OD2" ID2.875" Bolt Circle DiameterFour 3/8" ID Bolt Holes

36 Tooth Sprocket for #41 and #420 Chain Made from Aircraft Grade Tempered (Hardened) Aluminum Alloy For #41 and #420 Chain 36 Teeth F4 Mounting Pattern 6" OD 54.1mm ID Bore Four 6.2mm ID Bolt Holes @ 90 Degrees 65mm Bolt Circle Diameter Fits 4-Hole Freewheels Item # FWM-120 and FWM-125 Fits 16-Tooth Freewheels Item # FWM-100 and FWM-180 ...

38 Tooth Sprocket for #41 and #420 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #41 and #420 Chain 38 TeethF5 Mounting Pattern 6" OD 2.125" ID 2.638" Bolt Circle Diameter Five 5.25mm ID Bolt Holes

40 Tooth 4-Hole Freewheel Sprocket for 1/2" x 1/8" Bicycle Chain Made of aircraft-grade tempered (hardened) aluminum alloy. For 1/2"x1/8" (#410) Bicycle Chain F4 Mounting Pattern 6" OD 2.125" ID 2.559" Bolt Circle Diameter Four 0.244" ID Bolt Holes

40 Tooth Sprocket for #35 Chain Made from Aircraft Grade Tempered (Hardened) AluminumFor #35 Chain40 TeethF5 Mounting Pattern4.990" OD2.125" IDFive 5.2mm ID Bolt Holes2.638" Bolt Circle Diameter

40 Tooth Sprocket for #41 and #420 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #41 and #420 Chain 40 TeethF5 Mounting Pattern 6.7" OD 2.125" ID 2.638" Bolt Circle Diameter Five 5.25mm ID Bolt Holes

40 Tooth Sprocket for #35 Chain Made from Aircraft Grade Tempered (Hardened) Aluminum For #35 Chain 40 Teeth G1 Mounting Pattern 5" OD 2" ID Four 0.375" (3/8") ID Bolt Holes 2.875" Bolt Circle Diameter

40 Tooth Sprocket for #428 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum AlloyFor #428 Chain40 TeethG1 Mounting Pattern2" BoreFour 3/8" ID Bolt Holes2.875" Bolt Circle Diameter

40 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1) 40 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 6" OD2" ID2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.

42 Tooth Sprocket for #41 and #420 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #41 and #420 Chain 42 TeethF5 Mounting Pattern 7" OD 2.125" ID 2.638" Bolt Circle Diameter Five 5.25mm ID Bolt Holes

42 Tooth Sprocket for #41 and #420 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #41 and #420 Chain 42 Teeth G1 Mounting Pattern 2" ID 2.875" Bolt Circle Diameter Four 3/8" ID Bolt Holes

42 Tooth Sprocket for #41 and #420 Chain with R32 Mounting Pattern Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #41 and #420 Chain 42 Teeth R32 Mounting Pattern 26.1mm ID Three 5.5mm ID Bolt Holes 39mm Bolt Circle Diameter