Check the listing for details. RAM Drill Down Flat Surface Mount with Two 1" Ball Diamond Bases RAP-B-102-RA1U. Color: Black, Condition: New, Made in United States. Listed at 24.99 USD. Features: ---RAM ball and socket system with adjustment points at both socket ends of the arm ---Composite standard size (medium) double socket arm - overall length 3.73": socket-to-socket length 3" ---1 composite diamond bases with 1" rubber ball and 1 aluminum diamond bases with 1" rubber ball ---Each base measures 2.43" x 1.31" with two holes 1.912" from center to center, positioned at both ends of the diamond base ---Diamond base hole pattern will connect to many RAM cradles, as well as third party cradles including mounts with the industry standard AMPS hole pattern ---Holds up to 2 lbs. ---Made in the USA Brand: RAM Mounts Part number: RAP-B-102-RA1U Warranty: Manufacturer's lifetime warranty.