RAM Tough-Mag 88MM Diameter Magnetic Base with 1" Ball Diamond Base

Features: Contains ten magnets for a strong hold Flat 88mm (3.46")diameter base that is rubber coated to protect the metal surface you’re attaching to Diamond plate with a 1" (B size) rubber ball - connects to any B size RAM double socket arm * Constructed of marine-grade aluminum and rubber Holds up to 2 lbs. with standard use or up to 1 lb. with heavy duty use Assembly hardware included Made in the USA   * Magnetic base contains 2-hole AMPS pattern with M4 threaded inserts allowing you to upgrade to a C size RAM 2-hole AMPS diamond ball base(sold separately)   Brand: RAM Mounts Part number: RAM-B-238-MAG88U Warranty: Manufacturer's lifetime warranty