Knipex - The KNIPEX Siphon and Connector Pliers "SpeedGrip" (81 11 250 & 81 13 250) are ideal for tightening and loosening siphon screw connections, plastic pipe connections and round union nuts,
Knipex 81 19 250 V02 Replacement Inserts (New wider revised version) f – Crawford Tool
KNIPEX Siphon- and Connector Pliers for traps, tube fittings and connectors - YouTube