The brake drum of the North Benz V3 accessory North Benz heavy truck is divided into the front brake drum and the rear brake drum. The front brake drum uses the 160cm size brake pad, and the rear brake drum of the North Benz V3 accessory uses the 180cm or 220cm size North Benz V3 accessory brake pad. The customer should provide the 17-digit frame number when purchasing! If you don't understand anything, please dial 0472-3610990