SMART CRUSHER is specially designed by highly sophisticated CNC machines, which utilize the latest technology in processing and shaping aluminum, providing more superior grinders Contains a special teflon O ring which makes grinding even easier with absolutely no metal shavings guaranteed! Two Extremely strong Neodymyum magnets are used to keep a nice and tight closure. Made of extremely durable, and strong aircraft grade CNC aluminum for quality, durability and light weight. Features of a FOUR STAGE (4 PC) grinder…… This Super grinder has a CNC DIAMOND CUT RAZOR SHARP teeth to grind with great efficiency and ease. Contains a stainless steel micro mesh screen which allows only finest pollen to filter through. Ground spices is collected in the fourth Compartment, . The grinders measurements are 2.25″ Wide Easy to grind, and feels extremely smooth to turn BRAND NEW, top of the line quality, CNC aluminum 7 pcs pollen press. Specially made by high tech CNC machines with top of the line aluminum! 4 thermoplastic dowels This is by far the best selling pollen press available on the market because of its size, awesome quality, and great price! It is made of extremely durable, and strong aircraft grade aluminum for quality and to maintain its light weight.