These SVUPUE acrylic rings are handy to keep balls in position and not rolling around. They are constructed from clear acrylic, but the edges are sharp where they have been cut and not smoothed. Not very deep at only 1.5mm, meaning the ball isn't raised up - good in some situations where space is limited. Priced £6.49 for 6 at the time of this review = £1.08 each

Völliger Schrott. Einfach nur abgesägte Scheiben eines Acrylrohres mit unfassbar scharfem Grat. Vermackelt ebenso. Nicht zu gebrauchen.

These arrived in a plain thin cardboard box. The rings were still covered in their plastic film which whilst offering protection did look a bit tatty. The edges whilst not sharp enough to cut you looked a little unfinished and might have benefitted from being sanded off slightly. Maybe I am asking too much for a product that costs just £7, but the impression it gave me on opening the box was a somewhat lack lustre feel that could have been made into a better experience with a little more effort.Yes, they do the job providing the ball is of a good size. The rings are quite shallow, meaning that smaller balls will touch the surface the ring is sat on, leaving the ball to move in the ring. Perhaps being a little taller would have helped here.