RAM Mount Finger-Grip Holder w/Track Ball Base - Long [RAM-HOL-UN4-C-354-TRA1U]Finger Grip Holder with Track Ball Base Long This RAM Track Mount for handheld radios (RAM HOL UN4 C 354 TRA1U) is made up of a B size 1" ball molded to a high strength composite base, a rubber friction washer, and a stainless steel T bolt for sliding into any third party track system or the RAM Tough Track line of tracks. Simply insert or slide the Track Ball into your track and twist the ball clockwise to tighten it in place. Twist counterclockwise