27 Tooth Sprocket for #41 and #420 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #41 and #420 Chain 27 Teeth F5 Mounting Pattern 4.6" OD 2.13" ID 2.6378" Bolt Circle Diameter Five 5.25mm ID Mounting Holes
28 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum AlloyFor 1/2" x 1/8" (#410) Bicycle Chain28 TeethG1 Mounting Pattern4.75" OD2" ID2.875" Bolt Circle DiameterFour 3/8" ID Bolt Holes
29 Tooth Sprocket for #41 and #420 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum AlloyFor #41 and #420 Chain29 TeethG1 Mounting Pattern4.8" OD2" ID2.875" Bolt Circle DiameterFour 3/8" ID Bolt Holes
30 Tooth Sprocket for 1/2" x 1/8" Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For 1/2" x 1/8" (#410) Chain 30 Teeth F4 Mounting Pattern 54.1mm ID 65mm Bolt Circle Diameter Four 6.2mm ID Bolt Holes
30 Tooth Sprocket for #35 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #35 Chain 30 Teeth F5 Mounting Pattern 3.8" OD 54.1mm (2.13") ID Five 5.25mm (0.2067") ID Bolt Holes 67mm (2.6378") Bolt Circle Diameter
30 Tooth Sprocket for #41 and #420 Chain with F5 Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum For #41 and #420 Chain 30 Teeth F5 Mounting Pattern 5.1" OD 2.125" ID 2.638" Bolt Circle Diameter Five 5.25mm ID Bolt Holes
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
30 Tooth Sprocket for #41 and #420 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #41 and #420 Chain 30 Teeth G1 Mounting Pattern 5.1" OD 2" ID 2.875" Bolt Circle Diameter Four 3/8" 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
30 Tooth Sprocket for #428 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum AlloyFor #428 Chain30 TeethG1 Mounting Pattern2" BoreFour 3/8" ID Bolt Holes2.875" Bolt Circle Diameter
30 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum AlloyFor 1/2" x 1/8" (#410) Bicycle Chain30 TeethG1 Mounting Pattern5" OD2" ID2.875" Bolt Circle DiameterFour 3/8" ID Bolt Holes
32 Tooth Sprocket for #41 and #420 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #41 and #420 Chain 32 Teeth F5 Mounting Pattern 5.4" OD 2.125" ID 2.638" Bolt Circle Diameter Five 5.25mm ID Bolt Holes