VST baskets are designed for consistency from shot to shot and basket to basket. They deliver a consistent extraction as ristretto, normale or lungo with minimal change in the grind setting. The screen holes are cut using a new fabrication process for exceptional precision and consistency in the holes and pattern. Guaranteed for one year, with documentation on the individual basket's manufacture and quality control (the QR code stamped on the side of the basket!) .Available in 15, 18-, 20-, 22- and 25-gram sizes