Knipex Siphon and Connector Pliers chrome-plated, with non-slip plastic coating 250 mm 81 03 250Fine adjustment for ideal adjustment to diverse diameters For siphons, oil filters, plastic pipes and connectors up to 80 mm diameter 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