Profile: Hole Industries, Inc. provides failsafe industrial brake systems to thousands of industrial, manufacturing, material handling, mining and off-road vehicle installations. Our duo-grip design includes drum brakes ranging in size from 7 inches to 20 inches drum diameter for rotational applications and our linear brake for braking on traversing linear motion members directly. Our drum brakes are ideal for safety applications requiring emergency stopping or precise holding of position, where braking is spring applied and released by air or optional hydraulic pressure.