KS-418 / CAR CUP HOLDER W/ BALL HEAD Super knuckle features double socket arm and ball head in each end which allows lock positively with centre knob offers an ultra-versatile solution for mounting and positioning. Constructed from aluminum alloy die-casting shell, ball heads and knob makes it sturdy and lightweight. The standard ball heads comes with a hex baby stud in one end and a 1/4’’-20 threaded stud on the other. Connecting with Convi clamp by baby hex stud offers brilliant mounting solution on any tube from 5-50mm and flat surface. The innovative design of socket and ball head offers the ability to interchange various components for a wide range of applications in industries including lighting, camera, monitors, tablets, smart phones and any mobile device. Overall length: 151mm (5.95”), Loading capacity: 8kg (17.6lbs) This universal mounting car cup holder is perfect for all your mounting needs which can fit tightly in the cup holder of car center console. It features a twist-to-fit design utilizes an expanding weighted base to securely mount your device holder quickly and with more stability. The adjustable car cup holder comes with a ball head for connecting super knuckle accessories is perfect for iPad, GPS, Smartphone, MP3 player, and other types of device mounts! - Twist-to-fit Specification Weight 260g 9.2oz