WorkRite 179ACD Adjustable Diagonal Corner (lbk) Adjusts to fit 1" - 2" thick work surfaces. Clamping design eliminates spacers, saving installation time. Works with the pinnacle 2 and paramount arms. Dimensions: 12" W x 1 H Specifically designed to fit the Banana Board and Reversible 17" Corner Combo-Platform. Will also work with other WorkRite combo platforms. Works with the following platforms: 2180S, 2181SN, 2100FT, 317RL, 2110D, 2110RL, 180.