A-Tach # 11003
Converts a 17mm ball mounting pattern into a Single T slot
Makes a 17mm ball compatible with devices or holders (sold separately) that feature a Single T slot, including XM Satellite Radios (XM Onyx, StarMate, Stratus, Roady, Samsung Nexus & Helix) and third-party universal holders sold by Bracketron, Scosche, Peripower, and others.
This package includes only the 17mm Ball to Single T Slot Adapter with Tightening Ring. No holders or mounts are included with this item alone.