For siphons, tube fittings and connectors up to 80 mm diameter. Fine adjustment for ideal adjustment to diverse diameters. Robust, heavy duty. Ideal for tightening and loosening siphon screw connections, plastic pipe fittings and round union nuts. For connectors and couplings with screw connection, such as Cannon circular connectors. For gentle loosening of hoses on nozzles. 25 adjustment positions, box-joint design. Ergonomic handle geometry.