New, Unused Item *The box has been opened for photography purposes. Material: Stainless Steel Brand: No Brand Quantity: 1 [Compatibility] This 54mm bottomless (naked) portafilter is designed to work with Solis 1170 and Breville Barista series. [Filter Basket Included] A stainless steel 54mm filter basket is included and is compatible with the Solis stock 54mm filter basket. [Extraction Improvement] The bottomless design helps to observe flow rate, flow, color, flow stripes, etc. Identify defects and errors before extraction, judge the uniformity of extraction, and make more delicious and consistent espresso. 304 Food Grade Stainless Steel Wooden handle for a comfortable grip.