Economical value with dependable quality. Manufactured with multiple alloys for improved heat dissipation and performance · Mill-balanced for proper rotor function, no extra weights are needed · Quality... Manufactured with multiple alloys for improved heat dissipation and performance Durametal: Brake Drums, Rotors, Hubs for Heavy-Duty Trucks OE Replacement Rotor And Hub Wheel Rotor ACDelco Silver 18A957A Front Disc Brake Rotor And Hub 18A957A Rotor Hub Assembly Rounded radius for added strength ACDelco Advantage/Silver 18A957A - Disc Brake Rotor and Hub Assembly, Front ; Returns. Accepted within 30 days. Seller pays return shipping. ; Condition: NewNew Quality validated for proper metallurgy and correct brake plate thickness Mill balanced for proper rotor function; no extra weights are needed