The Barista Hustle Coffee Dosing Ring was designed to keep your workbench clean and your workflow smooth. The Barista Hustle Ring is a magnetic dosing ring that makes sure all of your coffee ends up in the basket and not on the coffee bar. Made with 304 stainless steel with a brushed finish on the outside and a mirror finish on the inside, it is as sturdy as it looks. Created with 8 strong Neodymium magnets, The Ring snaps on top of most standard 58mm portafilters quickly and cleanly. It also fits on top of dosing cups and lets your transfer to the basket without making a massive mess. The ring is also super easy to clean, corrosion resistant, and will likely last a very long time. Barista Hustle The Ring Features Mess free coffee grinding Lets you grind directly into the basket without spills. Stainless steel - Made with 302 stainless steel that’s corrosion-resistant and durable. Neodymium magnets 8 magnets line The Ring so it snaps flawlessly to your basket. Mirror finish interior The mirrored interior of The Ring lets you spot loose grinds that are not in the basket yet. Brushed finish exterior The brushed exterior is gorgeous -- plus there are no coatings that could chip off over time. Included: 1 x Barista Hustle The Ring Specifications: Materials 302 Stainless Steel Compatibility 58mm - 58.4mm Filter Portafilters Dimensions (H) 23mm x (inner diameter) 66mm x 70.5mm (outer diameter)