The Tin Knocker 20ga Button Lock Roll Former is a durable, time-saving machine, designed to efficiently create a 2-piece button lock seam. Tooling on one side of the machine creates the male button, while the other side creates the female lock, and the 2 sides snap together to form a flush corner. This 9-station roll former eliminates the need to hammer over edges, which allows for significantly faster and simpler duct assembly. Tin Knocker Tk 20 Ga. Button Lock Rollformer Manual Contact Us For a Quote
