SMART CRUSHER GRINDER ...MAGNETIC  hi-Quality pollen grinders beautifully designed and Newly Designed highly precise are made on CNC (computerized Numerical Control) machines, DIAMOND CUT RAZOR SHARP teeth to grind with great efficiency and ease and is standard fitted with strongest available magnet. Micron Tested  Stainless Steel  Screen This Product is built with four chambers grinding section(razor teeth), filter section and storage that works together..............................Size 50mm ...............