Experience the durable quality of Martin Tool C-Clamps. Made from drop forged, heat treated, quenched and tempered carbon steel, these clamps are designed for maximum strength and reliability. Choose from a variety of sizes with maximum jaw openings ranging from 2-1/8” to 12-1/4”. Each C-Clamp features an extra deep throat and copper plated fatigue proof spindle, making it an essential tool for temporarily holding work in a stable position.