The Twiflex VCS disc brake caliper is comprised of two similar halves or hydraulic modules and is used with a brake disc thickness from 0.8".The caliper modules are mounted on each side of a central mounting plate of the same thickness as the brake disc. Each module has a variable number of disc springs to produce a braking force in the range of 3150 lb up to 13,450 lb. Braking force is also dependent on the pad/disc air gap. Normally one or two brakes will be used per disc, but the number may be increased, depending on disc size.The brake units can be positioned at any angle around the periphery of the disc. A range of Brake Discs is available from Twiflex. Minimum disc diameter for the VCS caliper is 20".