About This Convenient Dosing Funnel - Our 51mm dosing funnel is made of durable aluminum alloy, featuring a sleek black finish that looks great in any kitchen. The funnel's unique design prevents coffee grounds from spilling out during use, making it perfect for busy mornings when you need to make a quick espresso. Includes Puck Screen - The included 51mm puck screen is made from high-quality 316 stainless steel and is 1.7mm thick with a 150um mesh size. This ensures a perfectly clean and even puck every time, making your espresso taste better than ever. Perfect Size - The bottom of the dosing funnel has six small magnets that allow it to easily attach to any 51mm portafilter. The funnel's bottom diameter is 51mm, with a top diameter of 61mm and a height of 23mm, making it the perfect size for use with espresso tools and accessories. Keep Your Kitchen Clean - Say goodbye to messy countertops and coffee spills! Our freedom funnel makes it easy to grind your coffee and then smoothly transfer it to your portafilter. The funnel's design also eliminates any mess when transferring the coffee - making cleanup a breeze! Must-Have Espresso Accessory - Our dosing funnel and puck screen are must-have accessories for any serious espresso lover. They make the process of making espresso faster, cleaner, and more precise, resulting in a superior cup of coffee every time.