Shorter, more effective and with even more power, the new impact wrench is now entering service for the placement of sealing plugs. Following a short development phase, the result is an optimized robotic tool which can be used in the existing tool holders of both Schwalm milling cutters and doesn't need any extra mounting/adapters. The Schwalm Kanalsanierung team is already enthusiastic. The first tests in the placement of sealing plugs on a large scale were extraordinarily efficient and were passed with distinction.