After a long search for an affordable L-rail for my camcorder DSLR`s and I came across this product. The first of its kind but I bought on eBay for three times the price of this offer and was still very pleased for just 30.00 euros a universal L-rail to grab. I put it to the sub-optimal upending the camera to simplify a with a spherical head especially. I am thrilled, all freedoms of the ball head are available again (which is indeed extremely limited when upending). The height of the camera is much less varied than with Ball Head. The change by the Arca-Swiss-compatibility is very fast. Meanwhile, I have all the quick release plates through the L-rails replaced and am happy with it. The only restriction that applies to me, is the partially hidden access to side ports. Microphone, triggering, USB, HDMI cable should only be connected and then the L-rail (possibly slightly offset depending on the camera) will be mounted. I had premeditated to buy for my camera models specially made L-rails but I was extremely overpriced (about 70-250 euros !!!!!). For the little milled aluminum already fierce. In retrospect, there is a great additional benefit with these rails ... I, each of the L-rails mounted on each camera, egel whether with or without Battereigriff what does not work for the very expensive specialized L-rails. So for me, the most perfect product at a very fair price and my recommendation for people who want to remain flexible and appreciate good quality cheap.