Product Note: ►Whether you need to deal with cracked floor joists, rotted support beams or sagging decking, we have the right size floor support post jacks to meet your needs. ►These temporary beam support posts are not intended to be used as permanent floor joist jacks. Specifications: Color:Red Model:Floor Jack Item model number: TL226c1 Main material: steel Adjustment Height 1: approx: 7″-11″ inch Adjustment Height 2: approx: 11″-16″ inch Adjustment Height 1: approx: 16″-21″ inch Min & Max Height Capacity: 6860 lbs to 11023 lbs .