Piher's Z Piston Clamps feature totally enclosed screw threads so you don't have to worry about infiltration of glue, dust or arc spatter. Although they are not double-threaded like Piher's Maxipress line of clamps, they still generate a very impressive amount of pressure for a modestly sized, easy-to-handle clamp—up to 900 pounds. The bars are made of zinc coated steel, and the handles are made from solid beech.
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