The metal adapter converts your 38mm (1.5 inch) mount into a 4-Hole AMPS drill-base mount. (Mounts, holders, and devices sold separately.) Simply unscrew the mount shaft to remove the head or base (which ever you prefer), then insert the adapter and re-tighten the mount shaft. The metal construction provides a sturdy connection for drilling into dashboards or other solid, flat surfaces, ideal for commercial or fleet use.

APMAMPS38MM