What's in the box:

Mini Quick Release Plate for LCD Monitor Magic Arm LED light Camera Camcorder Rig (Standard)

Features:
Specially designed to connect the LCD monitor and friction articulating arm.
With security locking system to quickly lock the quick release plate.
1/4" screw to mount on the monitor.
A wrench to help you install the devices.

Specifications:
Material: Aluminum & Steel
Screw Size: 1/4"
Item Size: 4.8 * 2.4 * 1.7cm / 1.9 * 0.9 * 0.7in
Item Weight: 47g / 1.6oz
Package Size: 14.8 * 8.8 * 2.5cm / 5.8 * 3.5 * 1.0in
Pacage Weight: 60g / 2.1oz

Package List:
1 * Quick Release Plate
1 * Wrench
1 * Washer