The SRGBW40 WINGITS® is specified and/or approved in Healthcare, Government, Institutional and Commercial Markets – Including Every Major Hotel Chain throughout North America. It eliminates the need for structural blocking and NEVER Loosens. The GBW40 is 100% waterproof utilizing 3M's VHB tape. Rated up to 800 lbs. in drywall and tile and in 1/4" fiberglass tub surrounds. When installing the GBW40 into Ceramic Wall Tile, Plaster or Marble, use the Industrial Grade Carbide APACHE200™ drill bit for quick, precise holes, 1.25" hole required. Designed for 2" x 4" hollow walls and wall substrates from .25" - 1.5" thick. Now you can install a grab bar EXACTLY where you want it - EXACTLY where you need it. Used to install WINGITS® Grab Bars, World's Strongest Grab Bars. Proudly Made In The USA.