Drywall sheets can weigh up to 150 lbs. making installation a two man (or even three man) job. With a drywall lift, you can install full sheets of drywall in a fraction of the time and you can do it with no help. Feature: Eliminate Risk- Eliminate risk of injury due to the heavy lifting, Prevent strain and injury by letting the lift do all the hard work Support Hooks - Secures the drywall on the lift and prevents it from sliding off during placement. Also helps pivot the drywall sheet into place so it is flush against the wall and adds support to prevent the edges of drywall sheets from getting crushed and broken. Sturdy - A 5' wide tripod base is supported by anti-slip, non-marring casters that won't damage floors; a 3" triangular frame (in 4' sections) features oversized lock nuts and clevis pins at critical pivot-points, and the base includes a flip-down backstop to secure the lift's position for mounting Large Cradle - Extends to 10' in width, has rubber caps on 3-position auto-locking outriggers to protect your material, and also features panel support hooks; it retracts to just 60" from the floor when tilted for easy loading Lifting Winch - Simple-to-operate, single-stage winch (18" wheel, 4" handle) with an extra-strong, braided-steel lifting cable; it includes a brake and a capped handle to protects hands Tool Free Assembly - Easy assemble, no tool required. Quick tool-free setup and disassembly for storage Specifications: Max reach for horizontal ceilings: 16-feet Max single sheet capacity: up to 4 X 16-feet Max load rating: 150-lbs Casters Size: 4"-inch Horizontal ceilings max reach: 16ft, angled ceiling Up to 19ft Max Reach for walls: 16-feet; (12-foot maximum lift and half the length of drywall) Package Content: Drywall Panel Lift Manual