Grow1 Punch N' Cut Tube Cutter The Punch ’n‘ Cut can be used in a variety of ways, including cutting tube, punching holes 0.12” or 0.18” in diameter, and inserting and removing barbs. It’s compatible with all Sunleaves tubing, and other PE and PVC tubing up to 1” in diameter. Can't find the Grow1 part you are looking for? Call in and we will be happy to assist you with anything you require