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With the Knipex 90 42 340 punch lock riveter, you build drywall metal frames faster and cleaner. You securely lock u- and C-studs together without using screws or rivets, completely eliminating protruding screw heads so plasterboards mount completely flush against the framing. Thanks to the high-ratio lever transmission, you punch through combined sheet metal thicknesses up to 1.2 mm (2 x 0.6 mm) with minimal effort. Its ergonomic multi-component handles and 340 mm tool length give you maximum clinching force and comfort throughout demanding drywall and partition wall installations.