ROLL-UP COVERS Only Milwaukee Protective Covers offers you the patented Multi-Spring Design™. A lower spring constant provides smaller changes in tension from fully retracted to fully extended positions. For maximum performance, The Sure Spring™, a patented innovation in torsional spring technology is designed for 5,000,000 movements in high velocity applications. Bands available in a variety of fabrics, stainless steel, or aluminum Mounting brackets made to MPC standards or to your specifications. Available with or without protective canister. Aluminum or steel protective canister that is plain, anodized or painted. Factory set pre-load for reliable installation. Spring mechanism is engineered for your travel speed and cycle time. Standard or custom brackets installed on canister. Most models have standard wipers so that contamination cannot enter canister.