The Jobu Design Pro2 Gimbal Head is a redesigned version of the popular Black Widow line of Gimbal heads from Jobu Design. The Pro2 is lighter and even stronger than its predecessor with a completely redesigned, 400% stiffer swing arm, which is CNC-machined out of solid aluminum.As its strength was improved, the Pro2 was also given an integrated Arca-style quick-release clamp, which saved on weight compared to the previous version. But even while exacting 2 oz of overall weight savings, Jobu Design made no compromise on the head"s ruggedness - among its tests, the manufacturer even took a hammer to this model, which suffered no ill effects from the thrashing.The Pro2 is rated to support over 35 lbs - essentially, the longest telephoto lens you can find (800 mm plus) will be well-served by this silky-smooth Gimbal. Like the earlier version, the Pro2 Gimbal Head features a horizontal mounting element, which is much easier for installing the lens and serves to avoid the sheer stress on the lens collar that side-mounting introduces.