Siphon and connection pliers feature a fine adjustment for an ideal fit for various diameters up to 75 mm. They are perfect for connections, oil filters, plastic pipes, and siphons, making them excellent for tightening and loosening siphon screw connections, plastic pipe connections, and round coupling nuts. These pliers are suitable for connections and couplings with screw fittings, such as Cannon circular connectors, and allow for gentle disconnection of hoses at nozzles and filter cartridges. They provide optimal grip on dirt-, oil-, and grease-free surfaces. The 25-fold adjustable hinge and interchangeable gripping jaws include a two-component plastic insert with a hard carrier system and a soft gripping component.