[4 inch (approx. 10.2 cm) Pole Clamp] Wood clamp, up to 4 inches (approx. 10.2 cm). Throat depth: 3.5 cm. [Powerful Clamping Force] 4 inch (~10.2 cm) trigger clamp has up to 65 lbs (~29.5 kg) of squeezing force and metal ratchet mechanism, suitable for light work, woodworking F clamps and DIY woodworking. [Clamps and Jigs] 4 inch (approx. 10.2 cm) quick clamps for woodworking are available in two styles, jigs or clamps. The jaws are easily reversible, allowing the jig to be converted into a spreader clamp or a tensioning tool. [One-Handed Clamp] The one-handed F-clamp features a new handle and trigger that allow for easy one-handed operation. The boom handle is comfortable to hold, and the quick-release button slides the arm to the desired length. [DURABLE AND STRONG] The mini-bar clamps are made of high-quality nylon and hardened steel for excellent impact resistance.