Brand: RAM Mounts Manufacturer's Part Number: RAP-HOL-UN7B-354-TRA1U Part Type: Mobile Device Holders Product Line: Ram Mounts X-Grip Phone Mounts with Track Ball Base Summit Racing Part Number: RMI-6684 UPC: 793442955174 Mobile Device Holder Type: X-Grip cell phone holder Mobile Device Holder Mount Included: Yes Mobile Device Holder Mount Type: Ball base Mobile Device Holder Material: Polycarbonate/Steel Mobile Device Holder Finish: Black Double Socket Arm Included: Yes Double Socket Arm Length (in.): 3.000 in. Ball Mount Base Included: Yes Ball Diameter (in.): 1.00 Quantity: Sold as a kit. Notes: Kit includes Track Ball base， X-Grip cell phone holder， double socket arm， and hardware. Fits most mobile devices and smartphones with or without case. Ram Mounts X-Grip Phone Mounts with Track Ball Base Ram Mounts X-Grip phone mounts with Track Ball base consist of a Track Ball base， composite double socket arm， and universal， spring-loaded X-Grip cradle for cell phones. The design features a 1 in. diameter rubber ball and socket system with adjustment points at both ends of the socket arm， allowing you to achieve perfect viewing angles， while the spring-loaded X-Grip cradle expands and contracts， allowing for a seamless fit with your phone. Ram Mounts X-Grip and Track Ball kits are the perfect complement to the modern and sleek interiors of today's vehicles， and they are compatible with virtually any track system including the RAM Tough-Track.