Clamp-All® Hi-Torq hubless coupling connects pipes in a high-risk DWV pipe system, and withstands high thrusts or blockage pressure on mismatched pipe/fitting diameters. Torque wrenches tighten the worm drive screws on coupling. Ideal for plumbing, irrigation, and home project applications; works with most soft hose or tubing to transport water and prevent leaks in pressurized systems. As part of a complete flow management system, the hose clamp connects two 7/16 - 25/32 in. OD pliable hoses or tubing together to allow water to flow through while preventing leaks.