Designed specifically for professional baristas competing in the 2011 World Barista Championship, IMS prioritizes top-notch quality and superior coffee flavor. Every IMS basket size boasts distinct characteristics, featuring uniformly spaced holes of precise diameter and pattern tailored to the basket's size and depth. This meticulous design promotes consistent extraction with each use.Dosage capacities/recommendations:53mm, double: 14 to 18 grams53mm, triple: 19 to 22 grams58mm, double: 16 to 18 grams58mm, triple: 18 to 20 grams