SHM SLX ROTOR 6-BOLT 180MM  Outside Diameter: 160mm. Center Distance: 44mm. Thickness: 1.9mm Pattern: Standard, 6 bolts pattern. Material: Stainless Steel (SUS410). Easy to Mount on your Disc Brake Ready Frame and Fork Suitable For Road Bike, Mountain Bike, BMX, MTB Package Include： 2 x 160 mm Bicycle Brake Rotor + 12 x Screws