One-handed trigger clamps use a single-handed trigger plus a quick-release push button to set and release the jaw position. Spring-style clamps often use a ratcheting or stepped mechanism to let you adjust clamping pressure. Many models add anti-slip two-component handles for grip and swiveling or pivoting jaw pads to keep the clamp aligned while protecting the workpiece.

Look for swiveling or pivoting jaw pads and soft or conforming pad materials. Swivel-type pads reduce surface marking by aligning to the workpiece, and softer or replaceable pads help spread pressure and protect irregular shapes.

Bar clamps show a range of maximum openings and throat depths. Examples include models with up to a 36-inch opening and about a 7-inch throat, and others listing roughly a 39-inch clamping capacity with a 4.75-inch throat; specific numbers vary by model.

Materials vary by type: trigger and spring clamps often use heavy-duty resin or plastic with metal internal parts; bar clamps use steel bars and steel or plated hardware; bench vises commonly use cast-iron bodies with heat-treated or hardened steel jaws. Construction choices reflect intended strength and durability.

Listed figures vary by product: some bar clamps list holding forces up to about 4,880 lb or 1,450 lb (model-dependent), a bench/milling vise lists clamping force up to 29 kN, and a wire-rope clamp example lists a working weight capacity around 26 lb. Check each product’s spec sheet for exact ratings.

A right-angle clamp holds workpieces at 90° to help align and secure joints during assembly. Many models provide a fixed reach (for example about 5") and some include an adjustable or automatic pin/mechanism that adapts to different material thicknesses so the clamp can hold various board sizes without constant repositioning.