Hemper Travel Aluminum Grinder 4 Piece SmallDescription These rare Hemper Brand grinders are 4 piece and each come complete with a pollen scoop! While 2 and 3 piece grinders are fantastic and always get the job done, 4 piece grinders are truly where its at. They all have relatively the same design: two pieces to grind the bud on top, followed by a screen and pollen kief catching compartment. Pollen Kief is a popular addition to the top of your bowls. **1. 5 Inch Diameter** WHATS INCLUDED: (1)