Quick, Convenient Clamping with Automatic Adjustment Wood Project Clamps are perfect for Kreg Joinery, project assembly, general clamping, and more. Available in two sizes (6" reach and 3" reach) these versatile wood clamps have large clamp faces that distribute clamping force evenly and won't mar delicate surfaces. They are compatible with the Kreg Pocket-Hole Jig R3's Clamp Pad Adapter, 300-Series Pocket-Hole Jigs and with the Kreg Pocket-Hole Portable Base. Auto-Adjust Technology Thanks to Automaxx® Auto-Adjust Technology, Wood Project Clamps adjust to match material thickness automatically with a simple squeeze of handles — whether the material is thick, thin, or in between. You can clamp a 2x4 and then a piece of 1/2" plywood without ever readjusting the wood clamp. Easy-to-Regulate Clamping Pressure Easily regulate clamping pressure with a simple thumbscrew. Just set your desired pressure by turning the thumbscrew for more or less pressure. Once the pressure is set, the wood clamp maintains consistent clamping pressure with every thickness. Highly-Durable Construction Wood Project Clamps are designed to withstand years of heavy use, thanks to heavy-duty, all-metal construction. They also have ergonomic padded grips for comfort and ease-of-use.