Chev Silverado 3500 & 3500HD Rear Disc Rotor 2001 - 2010 # AR-8646Chev Silverado 3500 & 3500HD Rear Disc Rotor 2001 2010 # AR 8646 Premium Brake Rotor Intended for Street Use: Yes For Use with Stock Calipers: Yes Rotor Construction: Vented Rotor Style: Solid surface Rotor Outside Diameter (in.): 12. 79 in. Brake Rotor Bolt Pattern (in.): 8 x 6. 50 in. Brake Rotor Bolt Pattern (mm): 8 x 165. 10mm Nominal Thickness (mm): 30. 00mm Discard Thickness (mm): 28. 50mm Rotor Material: Iron Rotor Finish: Black E Coat