These new mounts are awesome! Sold as a pair, the Down River Bimini Mounts easily attach to your 1.25in (LD) or 1.5in (XD) frame pipe by simply tightening a screw. The plastic Bimini end cap slides nicely between two metal prongs and is locked in place by a screw, allowing the Bimini to be stowed quickly. The 1.25in will fit NRS frames.