Espresso s mirror offers invaluable into the extraction process, allowing for real-time observation of coffee flow rate and potential channeling issues, to achieve -level precision. The espresso mirror stand features dual ball heads with 360 rotation capability, and features a wide 65mm diameter mirror, allows you to monitor coffee flow and extraction quality from every angle, perfect for home and professional coffee station. The magnetic adjustable base of the mirror is strong enough to hold the mirror securely and compatible with all bottomless portafilters, it's easy to position and stay firmly in place during use, and a addition for coffee machine. The coffee s observation mirror is crafted from stainless steel, polished mirror well that provides a clear and undistorted view during extraction, it is unbreakable, rust-proof, no worried about falling or moving, sturdy, last for long use. The coffee s reflective mirror is a surprisingly simple yet ingenious accessory for any espresso enthusiast looking to perfect their craft, also helpful for those to using a bottomless portafilter, ideal gift for home baristas & professionals alike. Color: As Shown Material: Stainless Steel Package Contents: 1 x Espresso S Mirror Only the above package content, other products are not included. Note: Light reflection 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.