Description: PROFESSIONAL: Espresso Dosing Funnel Aluminum Alloy Coffee Dosing Rings. AVOID MESS: Coffee Dosing Rings stop wasting coffee and messing up your work top, with a coffee dosing funnel all the coffee goes into the portafilter basket, severely reduces the mess and difficulty in loading and . DURABLE: Made of premium aluminium alloy, durable,wear resistant. EASY TO CLEAN: The funnel is safe, you just rinse it with water and clean it with brush or sponge; As for use, you simply place the funnel atop of your portafilter while grinding, distributing and , and removed funnel quickly when finished. CONVENIENT TO USE: The stainless steel dosing Rings features lightweight and portable, which makes it easy to use and install, offer you much convenience. Specification: Material: aluminum alloy Size Chart: 53mm: Inner Diameter: 5.3cm/2.09in; Outer Diameter: 6.4cm/2.52in; Height: 2.2cm/0.87in 58mm: Inner Diameter: 5.8cm/2.28in; Outer Diameter: 7cm/2.76in; Height: 2.2cm/0.87in Package Includes:(5 Pack) 1 Coffee Dosing Rings