Brand: RAM Mounts Manufacturer's Part Number: RAM-HOL-PD4-238AU Part Type: Mobile and Media Device Mounting Accessories Product Line: Ram Mounts Quick-Grip Spring-Loaded Phone Holder Mounts Summit Racing Part Number: RMI-6399 UPC: 793442009099 Mobile Device Mounting Accessory Type: Cell phone cradle Ball Diameter (in.): 1.00 Ball Diameter (mm): 25.4mm Quantity: Sold individually. Notes: The height range is 5.75 in. to 7.25 in.， the width range is 2.625 in. to 3.625 in. and the max depth is 0.72 in. Ram Mounts Quick-Grip Spring-Loaded Phone Holder Mounts Ram Mounts Quick-Grip spring-loaded phone mounts don't clasp merely cell phones--they hold anything that fits in them including GPS units， PDAs， blue tooth speakers， and more. The spring-loaded mechanism and adjustable side arms grip your mobile device securely no matter how bumpy the ride gets， while still allowing access to any side-button configuration. Most of the mounts also feature the rubber ball and socket system that helps absorb vibrations and allows for a vast array of adjustments to provide the perfect viewing angle. Embrace the adaptive advantage of RAM Quick-Grip spring-loaded phone mounts.Features， specs， and parts may include:* High-strength composite and powdercoat marine-grade aluminum* Industry-standard AMPS hole pattern for mounting small electronic devices* RAM Quick-Grip phone holder with mounting hardware* Other RAM components depending on application