IMS Precision Filter Basket, designed for Verybarista. Convex base for 18-22g coffee Expertly manufactured for 51mm group head portafilter. The convex base concentrates the flow of water towards the middle of the basket. This design maximizes the extraction of the entire coffee puck, facilitating efficient drying and ejection Shape of basket and hole pattern matches all types of coffee roasts-from dark to light roasted. Result: emphasized fruitiness, more body, more crema. (IMS - "E" design pattern) Compatible with all DeLonghi La Specialista, Dedica Espresso Machines and bottomless portafilters. An essential tool for home baristas who want to achieve amazing results every time you use to ensure more flavorful espresso in every cup. Perfect for use with high quality grinders and high quality beans. Height 29 mm. For 51-51.3 mm Tamper. Made in Italy by IMS for VERYBARISTA To FIT basket to OEM portafiters - PLASTIC BOTTOM NEEDS TO BE REMOVED Convex Bottom - C, Height - H29, E- hole pattern IMS Competition filter basket with convex bottom to concentrate water flow towards the center of the basket. Designed for use with 51mm bottomless portafilters. Ridgeless stainless steel AISI304 food safe. Electropolished surface. Made in Italy. Fits all Delonghi espresso machines with 51mm portafilters.