SitePro Yellow Aluminum Anti-Crush BipodSitePro 07 4364 FY Aluminum Anti Crush Bipod The SitePro anti crush bipod prevents crushing of your carbon fiber or prism poles and allows surveyors to set up a freestanding prism pole or GPS pole. New anti crush bipod head prevents crushing of carbon fiber range and prism poles when clamping on Fits 1 to 1. 25 inch outer pole diameter Poles with 1. 5 inch outside diameter can attach easily through the top of the open clamp Poles easily attach through