The APAMPS17MET adapter converts your 17mm mount into a 4-Hole AMPS drill-base mount. (Mounts, holders, and devices sold separately.) Use the APAMPS17MET adapter with any Arkon mounts utilizing the 17mm ball pattern. Mount devices having a 4-Hole AMPS pattern, including vehicle-specific mounts (VSMs), cameras, GPS devices, audio/video receivers, or satellite radios including Sirius S50, Sirius XM Onyx Plus, XM Onyx EZ, Sirius XM Lynx, Stratus 7, Dock & Play, and Sirius Dock & Play (sold separately). The adapter's metal construction provides strength and durability for heavy-duty applications.