The IMS premium, precision-engineered competition filter basket designed for espresso enthusiasts and professional baristas. Part of the renowned IMS (2 cups) and E&B Lab series, this ridgeless flat-bottom basket is built to maximize espresso extraction. Engineered with a patented 715-hole hexagonal perforation pattern and finished with advanced electropolishing, the ensures a perfectly balanced, channel-free delivery for your daily espresso. Key Benefits & Features Optimized Flat Bottom Shape: Designed specifically by IMS to create the perfect ratio between the base and height of the coffee puck. The flat-bottom cylindrical shape exploits the entire coffee puck, boosting extraction yield while facilitating dry pucks for easy knock-out. Exclusive Patented Perforation: Features 715 precision-cut circular holes (0.30mm diameter) arranged in a hexagonal pattern. The conical cross-section of each hole prevents clogging and guarantees an even flow rate. Competition-Grade Calibration: Every basket is relaminated and recalibrated to strict competition standards, ensuring zero variance between shots. Sanitary Electropolished Finish: Undergoes wet vibrofinishing (tumbling with ceramic inserts) and electropolishing. This results in an incredibly smooth, non-contaminating surface that resists coffee oil buildup and is incredibly easy to clean. Perfect Tamper Fit: The 60mm inner body diameter perfectly accommodates precision tampers sizing between 58mm and 58.4mm. Technical Specifications Specification Details Model / SKU Basket Capacity 12 to 22grams - Multiple options Height 20 mm - 22 mm - 24mm - 26mm Border Diameter (Outer) Ø 70 mm (B70 Series) Body Diameter (Inner) Ø 60 mm (Ideal for 58mm / 58.4mm Tampers) Ridge Type Ridgeless Shape Cylindrical with Flat Bottom Perforated Area Ø 49 mm Hole Count & Pattern 715 Holes in Hexagonal Pattern Hole Diameter / Shape 0.30 mm / Circular with Conical Cross-Section Finishing Passivated, Tumbled, & Electropolished Export to Sheets Capacity & Roast Level Guide Coffee density changes based on the roast level. Use this official I.M.S. capacity guide to perfectly dial in your B702TFH20 basket: Dark Roast (e.g., 80% Arabica/20% Robusta blend): 11.5g – 13.5g Medium Roast (e.g., 100% Arabica): 12.0g – 14.0g Light Roast (e.g., Ethiopia Single Origin): 13.0g – 15.0g (Note: Need a larger dose? Explore the related sizes: B702TFH22 (14-16g), B702TFH24 (16-18g), B702TFH26 (18-20g), or B702TFH28 (20-22g).) Machine Compatibility This basket features a 70mm outer edge and 58mm inner diameter, making it compatible with a wide range of commercial and prosumer espresso machines, including but not limited to: Astoria, Bezzera, BFC, Bianchi, Brasilia, Conti, DID Orchestrale, ECM, Elektra, Emanuale, Expobar, Faema, Faema (E61 group heads), Fiorenzato, Fracino, Grimac, Kees Van Der Westen, La Marzocco, La Nuova Era, La Pavoni, La Scala, Londinium, Magister, Nuova Simonelli, Promac, Quality Espresso, Rancilio, Rocket Espresso, Royal First, SAB, Sanremo, Slayer, Superkop, SV, Synesso, VFA, Vibiemme, Victoria Arduino, Wega, Meraki, Arkel