Strong, cast-iron heads (stationary or sliding) with an orange, powder-coated finish, merged with a high-carbon, rust-resistant steel bar. Acme threaded sliding head to accommodate a cold-drawn steel screw with a large, easy-grip handle and swivel pad. Multiple-disc-clutch design allows the sliding head to hold securely at any point along the bar. Clamping Force Up To 4448N Cast Iron Bar Grey Cast Iron Jaws Steel Spindles Screw-Handle Tightens Clamp Without Quick-Release Facility Plastic & Rubber Comfort Grip Clamping Force Up To 4448N Cast Iron Bar Grey Cast Iron Jaws Steel Spindles Screw-Handle Tightens Clamp Without Quick-Release Facility Plastic & Rubber Comfort Grip