Vaping is all about enjoyment and to get the maximum from your herb you need to use a quality grinder that will finely break up your material and still keep all the valuable resin sacks intact. These 2.2 inch 4-part grinders from the EDIT Collection do exactly that with their array of 28 razor sharp teeth and smooth action thanks to the nylon non-stick ring around the join section. There are 24 precisely sized holes drilled in the base to only allow your herbs to fall through to the lower section once they are small enough to be used effectively. There is also a sifter screen built into the lower section which helps collect all your loose pollen as it falls through to the base. They come complete with a pollen scraper and a velvet carry pouch to keep it clean and shiny. They are also available in 2.5 inch and 1.5 inch if you need something a little smaller.