The RAM® Tough-Mag™ 66MM Diameter Ball Base with Steel Adhesive Plate (RAM-B-MAG66PU) allows you to mount the RAM® Tough-Mag™ 66MM anywhere with the assistance of the adhesive steel plate. The RAM® Tough-Mag™ 66MM features an industrial-strength N35 grade magnet, rubber coating, wand a B size ball screwed into a ¼-20" threaded post. The steel ahesive plate is 2.5" diameter and can be attached to most flat surfaces to provide a secure hold for the RAM® Tough-Mag™. Browse hundreds of B size bases, arms, and devices holders to complete your solution. Backed by a lifetime warranty.