Diameter Width Arbor MK-415 7″ (178mm) 1.5mm 25.4mm/22mm MK415-180 8″ (203mm) 1.5mm 25.4mm/22mm MK415-200 10″ (254mm) 2mm 25.4mm MK415-250 12″ (305mm) 2mm 30mm/25.4mm MK415-300 14″ (356mm) 2.2mm 30mm/25.4mm MK415-350 Rim Height 9mm