The Dot Line Corp.5.5 In. Mini Arm With 1/4 X 20 with Adjust Accessory Shoe feature all metal construction and two ball joints controlled by one lock. Each joint allows 360 degrees rotation and 180 degrees tilt. The foot has a built-in lock and features a female 1/4-20 thread. One arm has an adjustable shoe on the top and the other has a 1/4-20 threaded post and platform. It measures with adjustable shoe, measures approximately 5-3/4 inches high.