JET tools woodworking belt and disc sander combos come with zero compromise. Usually combining two tools comes with a tradeoff lessening the ability of one of the functions. With JET disc and belt combo sanders motor speed, proficiency output and overall portability still prosper. Exclusive dual thumbscrew belt tracking adjustment locks are a feature that keeps the belt on track during use. The high performance motor of JET belt and disc sander combos are all tightly encased in a full cast iron body as the rest of the machine, reinforcing the overall durability of these superior machines.