The inner diameter of the Non-pressurized Porous Filter Basket is 58mm, which is generally applicable to 58mm Bottomless Portafilter. BUT some 58mm Portafilter of original standard may not be deep enough to insert the Filter Basket. It is strongly recommended that you carefully measure the inner diameter and depth of your Portafilter becompatible withe purchasing.The product contains 2 filter baskets and a blind filter. the depth of 2-cup and 1-cup is 24mm, the depth of Backflush Blind Filter is 15mm.The product made of stainless steel is safe and non-toxic.It is very easy to clean and convenient to use compatible with the next time. The product allowed to connect to magnetic Dosing Funnel.Material:stainless steel + plasticcolour:As shownPackage Contents:1 * Blind Filter1 * Single Filter1 * Dual Filter1 * Brush1 * Coffee SpoonOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.