Glass Mouse Skates Feet for Viper V3 Pro Made with Ultra Strong Flawless Glass Super Fast Smooth and Durable Sole (Glass GG Skates, for Viper V3 Pro)

It's not made of glass, just a soft plastic piece, and it makes a lot of noise when it rubs against a glass mouse pad. For the price, this is a terrible product.

The skates aren’t even thick enough to stick out so they actually touch the mousepad. Unbelievable

It's micro textured glass, basically equivalent to pulsar's super glide 2's. Makes my vv3 pro white go from 54.89g to 55.56g (+0.67g). Speed is very pad-dependent. Generally slower than polished glass like on my beast x maxAdhesive seems to be good quality. Printing is high resolution. Very even, flat surface. I'm quite impressed.