This was one of three I bought for my mill, each from different suppliers, because I wanted to closely match the travel needed. I already had two others on my lathe. They are all very similar, but this one has a more rounded corner along the back, which made it easier to fit to a part that had a fillet. The end construction is also slightly different and gives a slightly shorter overall length for a given travel. The packing of the slide was better than others, very important for shipping. Overall, very pleased with it. Would happily buy again.