The RAM® Universal Post Clamp Mount with Diamond Plate - C Size Medium Arm (RAM-102U-B-247) is a mounting solution designed to secure large handheld devices to forklifts. This kit consists of one (1) double socket C size short arm, one (1) diamond plate with C size ball, and one (1) square post clamp. The square post clamp will wrap around a square post with a maximum width of 4" and is tightened by screwing the two plates together with the included nuts and bolts. The RAM® rubber ball and socket technology dampens shock and vibration, as well as allows for almost infinite adjustment and perfect viewing angles.