It's a rather crude product, but works perfectly. Hang on the end of the OTA, and achieve prime focus in seconds!

Purchased for the Skywatcher 72ED, works really well and is easy to use.

Works....took me a minute of two to figure out that the long plastic screws in the box were for the mask and not for something else in my order also packed in the box

Worked perfectly with ZWO camera. Very quick and simple to use allowing pin sharp imaging by this beginner in astrophotography. Even worked with normal eyepieces which gave a useful check of its accuracy. Quite sturdy.

Used it for first time...excellent... I wouldn't be without it now. Ensures your subs in AP are at their optinum focus

Fast delivery, received after a couple of days. Material is MDF (or the likes but definitely not plastic). Giving it 3 stars as the holes are not in the correct position so you would have to figure something out before you can use it - it is possible that the fixed dew shield for SW Evostar wasn't taken into consideration when putting the holes

I now have peace of mind that I am in perfect focus.

Excellent piece of kit, makes accurate focus a breeze.

looks great but not had chance to use it yet due to something called cloud

Not used as yet (weather!); But nice solid build quality and swift delivery.