Compatible with for Gold Mount Power Adapter only - The HDRIG Cheese Board Backing Plate is only compatible with the Gold Mount Power Adapter and comes with a 15mm dual pole clamp bracket on one end for incorporating the power supply into the pole support system. Provides plenty of 1/4Inch-20 and 3/8Inch-16 threaded holes - Plenty of 1/4Inch-20 and 3/8Inch-16 holes allow you to mount articulated arms, poles, batteries, converter boxes, and a variety of other camera accessories to your configuration. Colour:Black Material:Aluminum Alloy Package Contents: 1 * for Gold Mount Power Adapter Cheese Board 1 * 15mm dual pole clamp bracket 1 * Hex key 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.