The RAM® Universal Post Clamp Mount with Round Plate - B Size Medium Arm (RAM-B-101U-247) is a mounting solution designed to secure small handheld devices to forklifts. This kit consists of one (1) double socket B size medium arm, one (1) round plate with B 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.