Review on Neewer 60cm Aluminum Alloy Camera Track Slider Video Stabilizer Rail with 4 Bearings for DSLR Camera DV Video Camcorder Film Photography, Supports up to 17.5 lbs/8 kg by Leo Torres

Great little slider. The bearings move smoothly and it held my camera (g85) with no difficulty. Keep in mind that you need to buy a tripod head for this. There are plenty of good ones here at Revain that are good value too. The rail is great for the money, but the rail itself flexes a bit when just attached to a tripod. Use two tripods/light stands on either end and you'll be fine. You can get it working just fine with one, but it takes some patience and maybe two or three passes. Overall, I recommend this to similarly priced tracks.