These grinders are the best in the market. The unique patented tooth design shreds through product like butter and leaves them nice and fluffy. I have tried many different brands of grinders and these are the most consistent grind, fluffy which makes anything from a bowl to a blunt burn so smooth. Ive had my Santa cruz shredder 4 piece for 5 years and it has been replaced by them via their lifetime warranty. They covered the shipping costs and tossed in some goodies with the replacement. Their customer service is legit and unmatched.