I expected better quality and assumed aluminium at this price.
I am surprised to find it is made of plastic, not aluminium; this means that the sockets which receive the anchor bolts are embedded in what looks like hot glue, so with one tight bolt, the socket starts to spin. Worries mount.
These anchors have got be be good, supporting entire weight of an expensive telescope when it is lifted onto the mount.
The bolts heads are US imperial, not metric, so watch out.

I am going ahead and will use it.....but ....