Interstate Pneumatic H14 5/8″ Center Punch Clamp Tensioner. Use this Ratcheting action tensioning center punch 5/8” tool crimper to install push lock preformed clamps on large hoses. Put the clamp tail in the tool slot and tension the clamp, use the dog lever to move the excess slack out. Strike the punch head several times after which snap off the clamp end by raising and lowering it several times till the clamp snaps off.