DEWALT 3 8 Inch PEX Expander Head DCE40038 Automatic Rotating Expansion Tool (Chrome Plated Compatible Plumbing Pipe Type A Expansion Fitting System) Reciprocating Saw Blade Dual Wet and Dry Operation: Dual Wet and Dry Operation: Optimized for dry cutting with dust extraction shrouds or wet cutting with water delivery attachments to suppress crystalline silica or jobsite this prevents uneven stress on the tubing walls and guarantees a superior Its durable construction features premium coatings to resist corrosion in high moisture environments while remaining fully compatible with standard ProPEX expansion systems