Quick-Grip, 12" Bar Clamp Spreader, 300 LB Clamping Force, 3-3/16" Throat Depth, Medium Duty 1 Handed Bar Clamp, Removable, Non-Marring Pads, Removable Swivel Jaw, I-Beam Bar Reduces Flexing & Bowing, Pistol Grip Design, Quick Release Trigger For One-Handed Operation, Quick Change Button To Easily Convert Into A Spreader Or Specialty Clamp With Installation Of 1 Handed Bar Clamp Accessories.