The Blank Slate Climbing Trainer Slim mounts in your doorway with no damage to the wall with just minutes of assembly. Add your own unique combination of climbing holds, hangboards, and accessories to the 10 pre-installed standard t-nuts. Attach your Smartphone or Tablet with supplied silicone bands for work out entertainment. The Blank Slate is made in the USA with only the highest quality components including Baltic Birch wood and high-grade, powder-coated steel. Hangboards and holds sold separately. Climbing Magazine Editors" Choice Award, March 2012. "One of the 13 coolest new products of the year. Now there"s no excuse not to have a hangboard in your house."...the most versatile training tool on the market, I would recommend it for anyone who wants a well-built and customizable training board..." DPM Climbing, March 2012