The Pro2be improves upon the already popular Probe lens design. This probe gives you 2 more stops at a T8 compared to the original model. Also the set includes 3 different versions of the lens; Direct View, 35° and 90° periscope all waterproof 14” up the barrel. The total length of the lens is 20” and in combination with its small diameter lets you reach any perspective all while focusing right to the front of the lens.