Quick Change, 18" Bar Clamp/Spreader, 3-3/16" Throat Depth, Medium-Duty One-Handed Bar Clamp, 300 LB Clamping Force, Removable, Non-Marring Pads & A Removable Swivel Jaw, Tightly Holds Most Irregular Shapes, Constructed Of An I-Beam Bar To Reduce Flexing & Bowing, Classic Pistol Grip Design & Quick Release Trigger For 1 Handed Operation, Quick Change Button To Easily Convert Into A Spreader Or A Specialty Clamp With The Installation Of One Of The 1 Handed Bar Clamp Accessories.