The POWERTEC 20318 Ductile-Iron Base, Push/Pull Quick-Release Toggle Clamp, 500 lb Capacity, 305-CM, 1PK, delivers a rock-solid grip on your stock when your project requires a push/pull holding-action that locks your workpiece, flush and tight, against a positive stop. It's the woodworker's essential solution for use in your jigs, fixtures, assemblies and movable bases. Lastly, having greater yield strength than cast steel, this unique material gets top marks in durability and high-performance - so you can get the job done to perfection, time and time again. The clamp body itself is ruggedly constructed of zinc-plated, cold-rolled carbon steel that resists corrosion, and is the industry-grade material of choice for clamping components. Last but not least, its ergonomic ribbed-plastic handle provides a comfortable, safe and sturdy grip that allows for enhanced user leverage and control. Streamline your projects with this ingenious device. Simple to install, adjust and use. Just pull handle to activate firm pushing clamp-action - its' that easy. Maximize utility, efficiency and woodworking satisfaction with POWERTEC Ductile-Iron Base, Push/Pull Quick-Release Toggle Clamp. We've got a secure grip on clamping perfection. Clamping Base Dimension: 2" x 2" -1/4"; Mounting slot measures: 1/4" DIA; Clamping range extends from 1-3/4" to 2-5/8"; Bolt length: 1-1/2"; Clamp height (including handle) when fastened: 3-7/8"; Total Clamp length (including handle) during use: 5-3/8" - 6-1/4".