High Efficiency Extraction: The bottomless portafilter allows you to visually monitor the entire espresso extraction process . It also reduces space occupied during brewing for an improved final shot quality Wide Compatibility: This 51mm/2.01 inch 3 ear bottomless portafilter is primarily compatible with DeLonghi EC680 and EC685 espresso machines . Its 3 ear structure ensures enhanced sturdiness and excellent load bearing capacity , making it ideal for commercial espresso machines or high pressure brewing scenarios Premium Materials: Crafted from high grade food safe stainless steel and ABS , our portafilter , along with its stainless steel basket , resists rust , features an exquisite polished finish , and is effortless to clean Precision Filter Screen: Equipped with 1 double shot basket and 1 round puck screen , this portafilter meets all espresso brewing needs . The 51mm/2.01 inch distribution screen helps avoid coffee grounds sticking to the machine's group head , keeping it clean at all times Detachable Ergonomic Handle: Designed with ergonomics in mind , the handle offers a comfortable grip and effortless use