ConMet's TruTurn brake drums are constructed using a unique "turned-to-balance" machining process, which improves strength by eliminating the need for weld-on weights and balance cuts. TruTurn drums are stronger and offer other advantages such as better thermal expansion for reduced brake pulsing, and improved heat transfer, so the drum and its lining stay cool. Braking force is more evenly distributed, and vibration and brake "judder" are minimized. Test after test, in the lab and on the highway, TruTurn brake drums beat the competition, according to the company. They surpass the accepted standards of the performance drag, stopping distance and durability tests.