This item is made of aluminum for projects, photo frame spell angle and carpenter’s . Aluminum alloy clamp body surface electroplating treatment, more durable, not easy to rust. High overall hardness, good toughness, precision screw operation, sliding more flexible and improve work efficiency. Features - Color: Silver. - Material: Aluminum. - Size: 30 x 2.8cm/19.69 x 11.81 x 1.1 inch. - 90 degree right angle clamp.Holds joints at a 90 degree angle. - Great for picture framing and wood working.Independently adjustable jaws. - Clamp’s body part is aluminum alloy die-casting construction, more durable and stronger but lighter to hold in hand - Thread rod is plated, which is anti-rust and better than blacking treatment. - Perfect for welding, installing furniture, doweling, making cabinet, frame and aquarium. - Electroplating rust-proof steel arbor with rotary jaw can be adjusted to and hold work pieces precisely, solid anti-skid strong rubber handle, secures quickly. Package list: 4 x right angle clamp