DEWALT Cordless PEX Expansion Tool DCE400D1 20V MAX Tube Expander Kit (3 8 to 1 Inch Type A Automatic Rotating Head Plumber Pipe Fitting System) Pry Bars 22 mm) Socket Forging Material 22 mm) Socket Forging Material Chrome Molybdenum Alloy Steel (Cr Mo) Surface Finish Protection Black Oxide (Corrosion & Rust Resistant) Size Marking Marking Style Dual System: Laser Etched Text and Hard Stamped Roll Branding Industrial Quality Compliance Meets or Exceeds ASME Specifications Pro Tip: Use the 3 8 inch drive universal joint at a slight angle with the deep sockets when removing rusted exhaust manifold bolts keeping the cutting speed low prevents heat buildup and stops the alloy from work hardening Technical Specifications minimizing material stress and potential future leaks at critical junctions