Parts - Norco

• The Flat gear is about 45 to 46 mm in diameter (1.70 inch).
• The Cupped gear is about 42 to 43 mm in diameter (1.65 inch).
• Hole size across flats 10mm (0.39 inch) end to end 12/13mm (1/2 inch)

This is our estimated shipping charge. If the actual charge is higher we will contact you before shipment.