A1

32 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1) 32 tooth sprocket for #410 (1/2" x 1/8") bicycle chain. G1 mounting pattern.2" ID2.875" bolt circle diameter. Four 0.375" (3/8") ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.

84 Tooth Sprocket for #25 Chain with ISO Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy84 TeethFor #25 ChainISO Disc Brake Rotor Mounting Pattern35.5mm BoreSix 5.5mm ID Bolt Holes @ 60 degrees44mm Bolt Circle Diameter

80 Tooth Sprocket for #25 Chain with G1 Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy80 TeethFor #25 ChainG1 Mounting Pattern2.875" Bolt Circle Diameter2" BoreFour 0.375" ID Bolt Holes @ 90 degrees

95 Tooth Sprocket for #25 Chain with Custom Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum AlloyCustom Mounting Pattern95 TeethFor #25 Chain94mm ID BoreFive 10mm ID Bolt Holes @ 72 degrees110mm Bolt Circle Diameter (BCD)

65 Tooth Sprocket for #25 Chain with F5 Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy F5 Mounting Pattern 65 Teeth For #25 Chain 54.1mm (2.13") ID Five 5.25mm (0.2067") ID Bolt Holes 67mm (2.6378") Bolt Circle Diameter

50 Tooth Sprocket for #25 Chain with F4 Mounting Pattern Made from Aircraft Grade Tempered (Hardened) AluminumF4 4-Hole Freewheel Mounting PatternFor #25 Chain50 Teeth4.1" OD54.1mm IDFour 6.2mm ID Bolt Holes Equally Spaced @ 90 Degrees65mm Bolt Circle Diameter

55 Tooth Sprocket for #35 Chain with F4 Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy55 TeethFor #35 ChainF4 Mounting Pattern54.1mm BoreFour 6.2mm ID Bolt Holes @ 90 degrees65mm Bolt Circle Diameter

56 Tooth Sprocket for #25 Chain with F4 Mounting Pattern Made from Aircraft Grade Tempered (Hardened) AluminumF4 4-Hole Freewheel Mounting PatternFor #25 Chain56 Teeth54.1mm IDFour 6.2mm ID Bolt Holes Equally Spaced @ 90 Degrees65mm Bolt Circle Diameter

72 Tooth Sprocket for #25 Chain with G1 Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum AlloyG1 Mounting Pattern72 TeethFor #25 Chain2" ID BoreFour 0.375" ID Bolt Holes Equally Spaced @ 90 degrees2.875" Bolt Circle Diameter

45 Tooth Sprocket for #25 Chain with F4 Mounting Pattern Made from Aircraft Grade Tempered (Hardened) AluminumF4 4-Hole Freewheel Mounting PatternFor #25 Chain45 Teeth3.75" OD54.1mm IDFour 6.2mm ID Bolt Holes Equally Spaced @ 90 Degrees65mm Bolt Circle Diameter

47 Tooth Sprocket for #25 Chain with F4 Mounting Pattern Made from Aircraft Grade Tempered (Hardened) AluminumF4 4-Hole Freewheel Mounting PatternFor #25 Chain47 Teeth3.9" OD54.1mm IDFour 6.2mm ID Bolt Holes Equally Spaced @ 90 Degrees65mm Bolt Circle Diameter

150 Tooth Sprocket for #219 Chain with 44mm ISO Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum AlloyMade with Four Lightening Cutout Holes As Shown In the Drawing150 TeethFor #219 Chain44mm ISO Disc Brake Rotor Mounting Pattern35.5mm BoreSix 5.5mm ID Bolt Holes Equally Spaced @ 60 degrees44mm Bolt Circle Diameter