0139 Phone Holder with Post, Track & Rail MountsThis Scotty phone holder is made with engineering-grade nylon and has an opening for charging the charging device.Features: Dual ball joints provide infinite flexibility for positioning; Easy Grip T knob; Stainless steel hardware; The snob allows for width adjustments, securing devices between 2-3/4 in. and 3-3/4 in. wide; Post mount that fits all Scotty post-mounting options; Track mount option included; Rail Mount option included (fits 7/8 1-1/4 in. rails); - cis2:mm5mnJlm -