Product Details: Improve your vehicle's stopping power so you can be Ready for the Road Ahead®, with the Meritor X30 16.5" x 7" Outboard Mount Balanced Brake Drum that ensures responsive and reliable brakes. With a balanced design and large contact surface, this brake drum offers both an extended service life, as well impressive level of corrosion resistance. With an exclusive one-piece spin-formed drum design, this replacement part provides 15-20% weight savings when compared to standard cast drums. Designed to provide superior performance for heavy duty applications. FleetPride is your First Click in Heavy Duty®.