I love this YC Onion Slider. This is a great addition to my camera bag! Build Quality: I am pleased to report that this item is very well made. It's really light, but the carbon fiber and all-aluminum alloy construction is very strong. The rubber feet on it are nice and soft and offer good grip when lowering. The baseplate attaches well to the bars and the slider is really smooth. As a bonus, both ends of the slider have rubber bumpers so it will stop gently if you slide it all the way to the side. The quality of the slider: The movement of the wheels on the slider is very smooth, there is no jerking back and forth. Super confident in the movements I make, even at extreme lean angles. There don't seem to be any snag points on the instructions, which is a good thing. Accessories: An adapter for converting from 1/4" thread to 3/8" thread is included in the scope of delivery and has several attachment points on the base plate. You also get a handy travel bag. Overall I am very happy with this product and would consider buying a second one if I had to have two cameras on sliders.