Rated up to 800 lbs. in tile and drywall or 1/4 in. Tub surrounds. GBW40, the original World's Strongest Fastener technology, developed for use with WingIts Grab Bars. Millions of installations in Commercial Construction have made the GBW40 the industry standard. It is used to install WingIts Grab Bars throughout the world in New and Existing construction. It is used extensively in Government, Healthcare and is the Standard throughout Hospitality (Marriott, Starwood, Hilton, Hyatt, Best Western, Choice Properties, Wyndham, Disney, etc.). Average time to install a Grab Bar is less than 10 minutes. Super Heavy Duty Stainless Steel Construction, incorporates 3M's best waterproofing. The original GBW40 is compatible with WingIts and Bobrick Grab Bars. When installing into Ceramic Wall Tile, Plaster or Marble, use the Apache200 drill technology for quick, precise holes. 1.25 in. hole required. No caulk needed - self waterproofing. Designed for 2 in. x 4 in. hollow walls and wall substrates from 1/4 in. - 1.5 in. thick. Exceeds all Building Codes and ADA Guidelines. Installs One WingIts Grab Bar. Made in the USA.