Durable & Strong Premium Materials: Clamp set using solid malleable iron casting,thicker screw for more secure clamp and durability drop forged frame with bright galvanized finish, coated surface preventing rustPerfect Size & QTY: Packaging include 4-Pack C Clamps, 4-Inch Jaw Opening, Throat Depth: 2 inch, Clamping Force: 1200 lbsScrew Rotary Handler: C-Clamp with sliding T-handle offers suitable maximum torque in order to reduce hand fatigue; The Swivel jaw pad floats allow gripping of various shaped parts, applying pressure evenlyHigh-Quality Design: Versatile clamp secures parts for assembly, fastening, gluing, and welding. Cast malleable iron frame with I-beam design provides sure strengthWidely Uses: C clamp is universally used and could conveniently hold up your accessory to shelves. Suitable for assembly, fastening, and welding in woodworking, metalworking, construction sites, and automotive applications, DIY and so on