Espresso Parts HQ 14-Gram Ridgeless Double Portafilter Basket This precision-milled 14-gram double basket skips the traditional retaining ridge, letting you seat a 58mm (or smaller) hand tamper flush against the rim, a format baristas have come to prefer for its cleaner extraction and easier prep. It's a higher-quality reproduction of the original ridgeless design, laser-deburred for clean, evenly sized holes. SPECIFICATIONS Material: AISI304 stainless steel, polished Outer diameter: 70 mm Height: 24.5 mm Hole diameter: 0.3 mm Hole spacing: 1.5 mm Hole count: 556 COMPATIBILITY Fits: most standard-sized commercial espresso portafilters (58.5 mm inside diameter at mid-basket); accepts a 58 mm or smaller tamper Replaces: EPMZ_107A INSTALLATION Drop-in replacement, no modification needed for portafilters using a standard 58mm basket seat. PRO TIPS The laser-deburred holes mean fewer coffee grounds get trapped in jagged edges, rinse and brush the basket after each use to keep extraction consistent.