IMPORTANT NOTE : Our portafilters are designed to fit snug into the Breville group head, providing a tight seal when brewing. However, due to the varying tolerances between machines, some may fit more snug than other. 54mm Bottomless/ Naked Portafilter and 54mm Filter Basket by MATOW, Fits Breville Barista Series and 54mm Breville Machines. Get naked and check what’s ly happening to your extraction. Use 54mm bottomless portafilter to ly see what’s happening under the hood – you can’t lie to this little friend it will show you exactly what’s wrong with your shot. PLEASE NOTE: When using bottomless portafilter,channeling and spurting can be very messy, but are EXTREMELY common. This is not a defect of the portafilter itself, but instead is your coffee telling you that there's room for improvement in your preparation process (grind size, tamping, distribution, etc.). Specification: Item Type: Bottomless Coffee Handle Material: Stainless Steel+ Natural Sandalwood Size: Approx.8.5*2.1*1.2in Weight: 12.8 ounces Package Include: 1 pcs x Coffee Bottomless Portafilter 1 pcs x Double Cup filter Basket SPECIAL NOTE: 1. All natural wood products the color and grain varies on each individual item. 2. There might be some deviation due to manual measurement