The X-Cup accessories are the perfect companions to your Bora Centipede workstand. The newly redesigned X-Cups let you use 2x material on its edge or face so you can raise your work above the struts to minimize potential damage. Provides drop-in support for standard 2 In. x 4 In. boards. Fits in 3 In. and 4 In. bench dog holes. Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go towww.P65Warnings.ca.gov/wood. -