The RAM-B-201U consists of a double socket arm that accommodates 1" B size ball bases, device holders, and adapters. With an overall length 95mm, this is the medium arm length in the RAM range. The easy to adjust knob allows for near-infinite adjustability for your connected device.
B Size Ball :2.54 cm (1") in diameter (generally used to support a load of 0-2 kg)
Note: this product does not include the pin spring.