Versatile Tool is Any Contractors Third Hand While Installing Showers, Doors, Glass Railings, Storefront, etc. | Singe Handed Jack Action Lifts Doors and Lites Holding Them in Position While Hinges and Brackets are Installed | Split Release Thumb Tabs Allow for 1mm Controlled Precision Drops When Leveling or a Complete Release | Single Jack Can Lift and Hold up to 330 lbs from 1/4"- 8-1/2" | Reverse the Jack Mast to Convert Tool To a Clamp | Purchasing the Twin Pack VJ3302 is an Economical Option for Single-Person Installations | Can Use used for Lifting and Positioning Heavy Tempered Plate Glass | Also Great for Storefront and Window System Installation | Includes Two Protective Sleeves for Working with Tempered Glass.