1.plastics+Alloy double pole design, Wider base and silicone pad, More stable, stronger load, Let you operate the mobile phone or tablet at will, No shaking 2.The angle is adjustable, it can be adjusted up and down 0-90° to make you feel more comfortable. 3.With silicone protection, anti-skid, and it does no harm to your machine. 4.Line avoidance, you can play your phone or tablets even when charging.