Kannastor GR8TR V2 Series Grinder - Jar Body BUILD IT YOUR WAY The GR8TR is Modular by design, allowing the GR8TRï¿?to be assembled and configured in many ways, the choice is yours. Not interested in sifting? Remove the sifting chamber to create a perfect 3pc GR8TR. Convert your GR8TR into a Storage sifter and get the most out of your Herbs. Grind and Go, brake the GR8TRï¿?into a slim pocketable Storage Puck. No other Grinder offers this many versitile configurations.