Light stand head combined with 1/4inch thread screw Designed to directly insert into a light stand / rod Internal column diameter measures up to 16mm /4inch thread hole & locating pins available Features quality-upgraded locking ratchet knob Tough, resilient and light weight The Light Stand Head features quality-upgraded locking ratchet knob, it is designed to be directly inserted into a light pole and fastened by lever thumbscrew knob, super easy to use. It comes with 1/4inch-20 thread screw on the other end through which you can mount additional accessory such as an magic arm, monitor, flashlight, etc. This combination piece is well made of high-quality aluminum alloy, it's very easy to set up and solid to use. Color: Black Material: Aluminum Alloy Package Contents: 1 * Light Stand Head Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.