Feature: 1. [Heavy Duty] Made from alloy steel, this door installation tool is sturdy and stable enough to withstand impact and bending. Black powder coated surface offers impressive rust resistance. Able to carry up to 500lbs, perfect for heavy pre hung doors, panel doors, and large doors. 2. [Vertical Adjustment] Our door lifter dolly allows for vertical adjustments, firmly securing doors upright. It levels doors from three angles, preparing them for installation in an efficient manner. 3. [Versatile Compatibility] The door moving cart fits a variety of doors up to 2 1/4 inch thick, like folding doors, steel frame doors, fire doors, or barn doors. The clamping range is easily adjustable with knob. 4. [Easy Transportation] Equipped with four 360 degree rotating wheels with brakes, our door transport tool makes moving and stopping during installation a breeze, enhancing convenience. 5. [Protective Non Slip Mat] Our door dolly features a large, high grip mat that increases the force bearing area, improves efficiency, and guards doors from damage, offering a highly reliable solution for door installation tasks. Specification: Item Type: Door Installation Tool Material: Alloy Steel Clamping Range: Maximum 2-1/4 Inch. Package List: 2 x Door Installation Tool