58mm Group Coffee Machines Portafilter VST Precision 18gram Ridgeless Double Filter Basket. Please check the measurement of your current baskets and handles to ensure correct fitting. Note: This Basket Has No Locating Ridge VST's new filters deliver consistent extraction performance. Experience uniform extractions across all groups for the first time - permanently. The essential espresso filter for those in search of the ultimate cup. Suits most E-61 group heads and any group that measures 60mm in diameter and work with a tamper 58.3mm. Dosing capacity is from 17-19 grams. Recommended for use with the following machines: La Marzocco, Synesso, Nuova Simonelli, Faema, La Cimbali and Rancilio with standard portafilters. Also compatible with the La Marzocco SWIFT Grinder. Basket Height 24.2mm. Features: All VST Filters are warranted for ZERO defects! 100% of holes are measured on every filter for minimum and maximum range limits on area and diameter All holes are measured for circularity, placement, square area and blocked holes Filters are matched for total square opening to +/- 5% to ensure identical group-to-group performance (typical filters vary from - 50 to +100%) Specifications: Basket Height: 24.2mm Dosing Capacity: 17-19g