I ordered one just to see for myself how it performs in comparison to the similar looking but more expensive brand that comes in a package of two, this grinder head was just as good in every way, the only tip I have for other users is, cut your glass as close as possible to the edge of the pattern, the less you grind the longer the bit will last. I will order more when I need it.

I ordered one just to see for myself how it performs in comparison to the similar looking but more expensive brand that comes in a package of two, this grinder head was just as good in every way, the only tip I have for other users is, cut your glass as close as possible to the edge of the pattern, the less you grind the longer the bit will last. I will order more when I need it.

I ordered one just to see for myself how it performs in comparison to the similar looking but more expensive brand that comes in a package of two, this grinder head was just as good in every way, the only tip I have for other users is, cut your glass as close as possible to the edge of the pattern, the less you grind the longer the bit will last. I will order more when I need it.

The diamond coating seems to be rather light. Not tried yet but seems ok but I don't know how many time it last.

The diamond coating seems to be rather light. Not tried yet but seems ok but I don't know how many time it last.

The diamond coating seems to be rather light. Not tried yet but seems ok but I don't know how many time it last.