Malco hand seamers, with die-cast zinc jaws, are gentle on painted or coated metal surfaces. These seamers are ideal for making clean and accurate bends and seams in aluminum roof flashing, coil stock or fascia. Malco's hand seamers, with die-cast zinc jaws, also feature ergonomic Redline handle technology. An Engineered handle opening compliments the natural power stroke of any user's hand and maximizes the powerful 7:1 mechanical advantage of compound-leverage head to handle linkage. Comfortable handle grip contours, a non-slip grip insert, spring handle actuation and a thumb-operated handle latch ensure a natural fit and feel for comfortable one hand operation anywhere on the job.