Air operated Pittsburgh Lock Closer is very handy tool for quickly closing the Pittsburgh joint on ductwork. It is used for closing 20g (1 mm) and lighter material. The force and speed of the hammer blows can be regulated by the depression of the trigger. Light pressure on the trigger starts the hammer blows at a slow rate, whereas full power is reached when the trigger is fully depressed. The maximum efficiency will be received from the tool when it is operated at 90 psi air pressure at 3700 Beats per Minute (BPM).

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