The Leofoto AM Series Versa Magic Arm Kit is a multi-purpose tripod accessory that attaches to the leg of select Leofoto tripods, or other tripods and camera brackets with a 3/8th threaded hole. The magic-arm allows a light, microphone, monitor, smartphone, tablet, or even an additional camera to be affixed to a camera rig without the added bulk of a clamp. Each end of the magic arm features a ball-and-socket joint that rotates 360Adeg, and the center elbow joint locks in any position. The large, easy-to-grip center knob locks all three movements simultaneously for quick and easy setup and repositioning. The "kit" version features anti-twist lock adapters on either end as well as 3/8th mounting studs. AM-3 Kit Folded length: 110mm / 4.33inExtend length: 200mm / 7.87inWidth: 54mm / 2.1inWeight: 198g / 0.46lbMax. load: 3kg / 6.61lb AM-4 Kit Folded length: 155mm / 6.10inExtend length: 292mm / 11.49inWidth: 53mm / 2.08inWeight: 239g / 0.52lbMax. load: 3kg / 6.61lb