Unlike standard tube cutters, which cut from the outside, these cutters slide into tube ends to cut and vent from inside. They’re often used to punch holes in plugged tubing to prevent pressure buildup, which helps you comply with ASME PCC-2 standards for repairing pressure equipment and piping.

Move the adjustable collar up and down the cutter to set it to the depth you need. Flatten the blade against the cutter body to slide into your tubing, then use a wrench to turn the hex shank at the end of the cutter. Turning the cutter clockwise engages the blade; counter-clockwise retracts it. The steel blade is strong enough to cut through tube walls in one pass, and is durable enough for multiple cuts. A pin and set screw hold the blade in place, so when it becomes dull, it’s easy to replace.