POWERSTOP SLOTTED BRAKE ROTOR, SOLID, SOLD INDIVIDUALLY -- 5 x 4 50 in bolt hole pattern; 10 280 in outside diameter; 0 390 in thickness; Provides a nice cleaning action to wipe away friction debris; Structurally stronger to handle severe thermal shock compared to drilled rotors; Treated with silver zinc dichromate finish that is highly resistant to corrosion; Recommended for racing and heavy duty applications like hauling, towing, and fleet use