The patented design of the FastJack can be easily expressed as the most innovative, efficient and cost-effective tool of its kind! Between the precision CNC machined base and stanchion along with strict engineering and material standards, the FastJack has been laboratory tested to provide 2,359 pounds of strength using only a single lag bolt! This 7.5" model is for standard flashings (sized for S-curve tile roofs and/or double flashed installations). Features: Easy to install Patented single lag bolt design Patent No. 6,360,491 Independently laboratory tested to 2,359 lbs ultimate pull out, 808 lbs ultimate side axial loads Used for mounting: PV solar panels, solar thermal panels, communication equipment etc. Lightweight and corrosion resistant Aluminum and Stainless Steel materials (no inferior ferrous metals which rust and weaken over time) Solid Aluminum post prevents water funneling down through top of post No welds to corrode or break Includes integrated 3/16" pilot hole drill guide 1" OD post diameter compatible with standard 3/4" UPC/ NES approved flashings (no expensive custom flashings required) Kit Includes: (1) Round Posts (7.5" Tall) (1) Threaded base (1) 3/8" x 3/4" SS Hex Bolt (1) 3/8" SS Flat washer (1) 5/16" x 3" SS Lag bolt (1) 5/16" SS Flat Washer