Worm Drive Hose Clamps including, JCS Hi-Torque, Jubilee Clips, Mikalor ASFA, Oetiker Narrow Worm Drives and HCL's Budget Worm Drive Hose Clip. The Worm drive hose clamp, commonly referred to as worm gear clamps, are a type of fastening device used to secure hoses onto fittings or pipes. They consist of a metal band that encircles the hose and is tightened by a screw mechanism, which allows for precise adjustment of the clamp’s diameter. This design provides a strong grip on soft hoses and is particularly effective for applications involving varying pressure levels. Buy direct from HCL for the best prices and service around.