Description Long lever and eccentric force support up to 3mm wall thickness. Especially to notch gas-, steel-, non-ferrous metal-, and steam-tubes. To notch out the welding line for T-connections of tubes. Three different diameters: 28, 34 and 43mm. Can be used horizontally and vertically.   technical details sheet metal working max. wall thickness in mm                     3 for diameter in mm               28 / 34 / 43 weight gross weight in kg                                     9 net weight in kg                                         8