Perfect your extraction technique with our professional-grade bottomless portafilter. This premium diagnostic tool reveals every aspect of shot development, combining traditional craftsmanship with modern precision for enhanced crema and superior flavor clarity.

• Interchangeable Calibration Springs: Complete set includes 15, 25, and 30-pound precision springs for perfect pressure customization.
  
  
• Enhanced Tactile Feedback: Intelligent design provides clear sensory confirmation when target pressure is achieved.
  
  
• Threaded Base Technology: Spiral-pattern tamping surface increases extraction contact area for improved flavor development.
  
  
• Anti-Compression Engineering: Integrated level base ensures consistent 90° vertical tamping for uniform extractions.
  
  
• Three-Stage Spring Mechanism: Advanced system provides reset functionality, constant pressure, and horizontal tamping assistance.
  
  
• Multi-Size Compatibility: Available in 51mm, 53.3mm, and 58.5mm sizes to fit all standard portafilters.