Reliable heating and plumbing installation requires tools that grip precisely even in tight spaces. Our assembly spanners are designed to securely loosen or mount valves, tap blocks, hanger bolts and toilet fixtures without damaging fittings or threads. Air in radiators leads to noise and uneven heat - this is where venting spanners, heating spanners and radiator bleeders come in. They open valves in a controlled manner and close tightly without dripping. For angle valves and flow/return groups, tap block spanners, tap extension wrenches and special wrenches are available, whose slim form makes it easier to work between narrow pipe spacings. Variable wrench sizes are covered by step spanners, 1/2‘, 3/8’-1" step spanners, gas step spanners, combi step spanners and models with ratchets - optimal for mobile service teams. In the fastening area, hanger bolt spanners, SDS-Plus attachments, fitting screw spanners and wc mounting spanners support safe working on fittings, brackets and cover plates. All tools are made of high-quality tool steel, are torque-stable and ergonomically shaped - optimal for heating technology, sanitary installation and building maintenance.