18 inch - 450 mm - 4 inch - 86-450
18 inch - 450 mm - 6 inch - 150-450
18 inch - 450 mm - 8 inch - 182-450
20 inch - 500 mm - 4 inch - 86-500
20 inch - 500 mm - 6 inch - 150-500
20 inch - 500 mm - 8 inch - 182-500
22 inch - 550 mm - 4 inch - 86-550
22 inch - 550 mm - 6 inch - 150-550
22 inch - 550 mm - 8 inch - 182-550