This ergonomic bottomless portafilter is designed specifically for Breville Dual Boiler and Oracle 58mm espresso machines, ensuring a seamless fit for daily espresso brewing. Featuring a bottomless design, durable stainless steel head, and an ergonomic rosewood handle, it is made for clear extraction observation, comfortable handling, and more consistent espresso preparation. DESIGNED FOR BREVILLE DUAL BOILER AND ORACLE MACHINES Compatible with selected Breville Dual Boiler and Oracle 58mm espresso machines. Please check your machine model and portafilter size before ordering. BOTTOMLESS PORTAFILTER DESIGN The bottomless design allows users to clearly observe the espresso extraction process, making it easier to identify channeling, uneven tamping, grind size issues, and overall extraction quality. DURABLE STAINLESS STEEL HEAD Built with a stainless steel portafilter head, this portafilter offers good durability, stable performance, and long-term use for regular espresso brewing. ERGONOMIC ROSEWOOD HANDLE The ergonomic rosewood handle provides a warm, natural look and a comfortable grip. Its shaped design helps improve control during locking, dosing, tamping, and brewing. MADE FOR EXTRACTION CONTROL This 58mm bottomless portafilter is a practical upgrade for Breville Dual Boiler and Oracle users who want to better observe espresso flow, improve consistency, and refine their brewing technique. Please check your espresso machine model and portafilter size before ordering. All portafilters include a double shot basket as pictured.