75mm concave convex mirror set for experiments

I liked it. Focal length not written in its cover. But i think it would be 10cm as mentioned here

Good quality mirrors

Diameter 75 mm is not there..... Diameter specification is not correct, f7 lens is not matching

Really good Mirrors, better than one on local market, has a extra coating on back to prevent reflective surface from damaging. Got the mirror without no crack and really good condition. 💯

The mirrors would have been excellent if there were no microscopic scratches, unsmooth edges here and there, and minute gaps in the coating on the rear. I wish the manufacturers would be meticulous in ensuring quality. When I sought a replacement, another set was delivered, to be sure, but it carried even more defects. The money was refunded, but what I wanted was a good product - I really needed the mirrors. If manufacturers can give such assurance I am as serious as before about having the mirrors. Otherwise, there is no point in the hide-and-seek of placing the order and seeking return. I also ordered and received their twin lenses - 75mm dia - which suffered from fringe-chipping, but I let it go at that. The point is, the products are very good; only the manufacturers must be meticulous in quality control and delivery.

Perfect for practical experiment

The mirrors were of decent size. The mirror coating had come out from the edges. There were scratches and stains on the mirror and it looked old.

Not for my usage