Note: Please allow slight error due to manual measurement. Thanks for your understanding. specification: Item Type: Mannequin Head Clamp Stand_x000D_Material: Plastic, Alloy_x000D_The thickness of the table can be clamped: Approx. 5cm / 2in_x000D_Uses: Suitable for students, barber shops, beauty salons, home users, etc. Features: 1Height Is Adjustable: Vertical knob design, height can be adjusted easily to meet your different needs, convenient and flexible. 2High Quality Material: Adopts excellent plastic and alloy material, strong bottom structure, firm and stable, durable for use. 3Easy To Install And Fix: Easy to install, can be firmly fixed on the table, not easy to slide, and it is very safe to hold the mannequin head. 4Display And Practice: The mannequin head can be placed on the stand for easy display of wig and doing various practice. 5Wide Range Of Application: Perfect for professional beauticians or students, suitable for beauty salons and home use. PackageList: 1 x Desktop Fixing Holder 1 x Mannequin Head Fixing Holder 1 x Connecting Spiral Ring