Milwaukee 1 In. Cuts PEX/Rubber Plastic Tubing Replacement Cutter Blade. The Milwaukee Tubing Cutter Blade cuts up to 1 In. rubber and plastic tubing and PEX-a tubing. Features a replaceable V-shaped, double ground steel blade for clean perpendicular cuts and maximum tool life. The one-handed locking mechanism is designed for an easy to use lock for improved tool safety. Fits 48-22-4200 and 48-22-4202 Milwaukee Tubing Cutters.