Check the listing for details. RAM-348U RAM Angled Square Adapter Plate for XM & GPS .... Color: Black, Condition: New. Listed at 17.44 USD. RAM Angled Square Adapter Plate for XM & GPS ... RAM-348U Genuine RAM Products! Designed to hold an XM or GPS antenna magnetically, the RAM-348U plate will attach between any RAM base with the AMPS hole pattern and most standard XM units. Mount your satellite radio receiver and antenna all on a single platform for both ease of installation and use. Whether you've run out of mounting space or simply have few good mounting surfaces, the RAM-348U antenna adapter plate opens up many possibilities.hardware included (4) #6-32 x 3/4 INCHES Machine Screws(4) #6 Stainless Steel Washers(4) #6-32 Nylock Nutsmaterials Marine-grade aluminumpackaging type Poly BagWeight 0.19 lb hardware included (4) #6-32 x 3/4 INCHES Machine Screws(4) #6 Stainless Steel Washers(4) #6-32 Nylock Nuts materials Marine-grade aluminum packaging type Poly Bag Weight 0.19 lb