KNIPEX Siphon and Connector Pliers – Ø 10mm – 75mm (81 11 250) Large clamping range, several possible applications — for odour trap screw joints, connectors and hoses that have become stuck. The siphon and connector pliers from Knipex suit a range of applications requiring large grip widths and gentle changes of grip that won't damage components. When odour traps need opening on kitchen and bathroom fittings, they can be gripped and twisted powerfully in a measured way. The pliers can unscrew and tighten screw joints on plastic pipes and sensitive connectors, and are also suitable for detaching hoses that have become stuck to supports, such as coolant hoses. The gripping jaws have a different shape to those of water pump pliers — designed for large pipe diameters. Thanks to their round shape, the pliers are used with union nuts on connectors