LM-300 Gooseneck mounts are seat-bolted and feature a 22 in. flexible gooseneck attaching under a bolt on either the driver or passenger side or can it be screwed directly into the floor. These flexible mounts adjust easily for the most convenient view and access of your mobile device. These mounts are supplied with a combination AMPS plate/microphone button/belt clip hook. You may use the four-hole pattern in the AMPS plate to attach a radio's remote display-head bracket. You may order a side grip holder that adjusts and clamps around the remote display head or other device and holds it in place. Optional side grip holders: * LM-H: Standard-size for remote heads, HTs, smart phones, GPS devices, etc. * LM-208H: Slim holder for smaller devices, i.e. the IC-208 head (max 4.75 in. length) * LM-AD1: Hold display heads with threaded socket, i.e. -400 series, -350 and IC-706 series