The Finish Hand Seamer K7 is ideal for closing 1 or 1 1/2″ single seams After closing the single lock seam with the DRÄCO flap locker K8, the double lock seam can be closed in one pass with the DRÄCO Double Lock Hand Seamer K7 Ideal for whole roofs, start and end connections or starting for electrical Power Seamer. Steel (22 gauge), aluminum (.040) , copper (20oz) and zinc can be a thickness of 0.8 mm. In stainless steel the maximum thickness is 0.5 mm (26 gauge) 10″ width K7 Manual
