A2

64 Tooth Sprocket for T8F (8mm) Chain with G1 Mounting Pattern Made from Aircraft Grade Tempered (Hardened) Aluminum For T8F (8mm) Chain 64 Teeth G1 Mounting Pattern 2" ID Four 0.375" (3/8") ID Bolt Holes 2.875" Bolt Circle Diameter

56 Tooth Sprocket for T8F (8mm) Chain with G1 Mounting Pattern Made from Aircraft Grade Tempered (Hardened) Aluminum For T8F (8mm) Chain 56 Teeth G1 Mounting Pattern 2" ID Four 0.375" (3/8") ID Bolt Holes 2.875" Bolt Circle Diameter

80 Tooth Sprocket for #35 Chain with Custom Mounting Pattern Made from Aircraft-Grade Tempered (Hardened) Aluminum AlloyFor #35 Chain80 TeethCustom Mounting Pattern1.6875" (1-11/16") ID BoreFive 0.3125" (5/16") ID Bolt Holes3" Bolt Circle Diameter Known Compatibility: Manco Model T Truck # 763-01 Rear Wheel Sprocket, Part # PX2520

100 Tooth Sprocket for T8F (8mm) Chain with G1 Mounting Pattern Made from Aircraft Grade Tempered (Hardened) Aluminum For T8F (8mm) Chain 100 Teeth G1 Mounting Pattern 2" ID Four 0.375" (3/8") ID Bolt Holes 2.875" Bolt Circle Diameter

30 Tooth Sprocket for #35 Chain with F4 Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy30 TeethFor #35 ChainF4 Mounting Pattern54.1mm BoreFour 6.2mm ID Bolt Holes @ 90 degrees65mm Bolt Circle Diameter

110 Tooth Aluminum Sprocket for #25 Chain with F4 Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy 110 TeethF4 Mounting Pattern (works with 4-hole and 16 tooth freewheels)For #25 Chain (works with standard #25 and heavy-duty #25 chain)

54 Tooth Sprocket for T8F (8mm) Chain with R32 Mounting Pattern Made from Aircraft Grade Tempered (Hardened) Aluminum For T8F (8mm) Chain 54 Teeth R32 Mounting Pattern 26.1mm ID Three 5.5mm ID Bolt Holes 39mm Bolt Circle Diameter

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 #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

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

30 Tooth Sprocket for #415 Chain with G1 Mounting Pattern Made from Aircraft-Grade Tempered (Hardened) Aluminum AlloyFor #415 Chain30 TeethG1 Mounting Pattern5" OD2" ID2.875" Bolt Circle DiameterFour 3/8" ID Bolt Holes

100 Tooth Sprocket for #25 Chain with ISO Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy100 TeethFor #25 ChainISO Disc Brake Rotor Mounting Pattern44mm Bolt Circle Diameter35.5mm BoreSix 5.5mm ID Bolt Holes @ 60 degrees