This grinder is made of super strong aircraft grade aluminum. Excellent and smooth grinding guaranteed. teeth are razor sharp. the screens are very tight. You cannot go wrong in buying this excellent grinder.PRESS: THERE IS NO BETTER POLLEN PRESS BEING SOLD ONLINE!Manufactured on CNC lathes, this item is a incredibly well machined tool for compressing pollen into a kake. Each unit is composed of seven parts:  Two CNC machined aluminum end caps. One CNC machined aluminum barrel. FOUR ABS thermoplastic dowels of different lengths. Thermoplastic dowels work MUCH better as the kake will not adhere to the dowel as it would to aluminum dowels.This item is 2 1/4 inches in length, 1 inch in diameter, and weighs 2 ounces. The INTERIOR barrel is 5/8 inches in diameter.Simply unscrew one end cap, remove 1,2 or 3 dowels depending on the amount of product that you need to press, place pollen into the unit, put dowel (s) back in, and screw the end cap back on.Here are the advantages of this press: 1.} FOUR dowels let you vary the amount of product to press. You are not limited by the press. You can actually press MORE product with this press than with longer ones by using the dowels in differing numbers and combinations. 2.} Finer and better threads. The use of CNC machines makes the threads on the barrel and caps more finely machined so that you can vary the compression on the kake with more accuracy. 3.} End cap grips. The end caps on this great item are shaped to allow a better grip on the item for a much increased ease of use. They make the press look great too!This will be the last press that you will ever need!