Quick-Grip™ Pro Phone Handlebar Mount with Qi2 15W Wireless Charger. Features: Spring-loaded holder provides a secure hold for phones and handheld devices; easily insert and remove your phone with one hand. Includes RAM® Qi2 wireless charger that fits seamlessly in the integrated center cavity. Made of high-strength composite for durability and reliability; Wireless charger features IP67 waterproof rating for withstanding water and dust in the most extreme conditions. Includes U-bolt base that accommodates rails from 1/2" to 1-1/4" in diameter and a short length, B size RAM® double socket arm; ball and socket technology allows for near-infinite adjustability. Specs: Clamp Range: 0.5" - 1.25" diameter. Ball Size: B Size (1"). Weight Capacity: Standard use: 2 pounds.