The KAMERAR 'TOUGH' Friction Magic Arm was exclusively designed from the ground up. Every section of the 'Tough' Arms were improved over other existing arms on the market. The stainless steel accents and black anodized finish provide both a professional aesthetic and an extremely long lasting durable finish. The three independent joints allow you to quickly change it's position with a single locking knob. Between the locking knob is a thrust bearing that assists to make locking easier, and stronger.