Model Number: A-06 Key Specifications/Special Features: Material: Aluminum oxide, silicon carbideBest speed disc, cool cutting, never burned workpiece,can cut everythingeven railway, 40mm steel bar Cutting on chop saw type: 41Wheel size(D x H)RPM Grit Cartonsqty Diameter Thickness(inches) Thickness(mm) Arbor hole 305 3/32 2.4 25.4 5100 30 50 305 7/64 2.8 25.4 5100 30 50 305 1/8 3.2 25.4 5100 30 50 355 7/64 2.8 25.4 4400 30 25 355 1/8 3.2 25.4 4400 30 25 405 7/64 2.8 25.4 3800 30 25 405 1/8 3.2 25.4 3800 30 25