Do not waste your money. At this price I expected it to be flimsy and uncollimated. Boy it is all of that, and more. Did my due diligence to collimate the thing and got it pretty close to perfectly straight. A waste of time and effort The machining tolerances are so loose that the fit in the focuser is approximative in the best of case. That thing wobbles so much in the focuser that it never centres properly, nor does it ever points straight down it, making any attempt at collimation a pure waste of time. No two collimations attempt and their follow-up control gave the same result. ALL were badly off. "How far off?" you may ask: so much that it was visible with the naked eye! Nothing even remotely close to centred and aligned. You are better off collimating by bore-sighting your eye down the open focuser. I will stick to my home-made collimation cap.
much cheaper than other brand but very useful