【Spring Loaded Espresso Tamper】watchget calibrated coffee tamper provides with a 30lb spring which can press directly to the ground coffee. Do not require additional adjustments and you can get a balanced espresso. Adjustable depth with scale lines help you to set the coffee extraction depth to get consistent tamping pressure.（Adjustable pressing depth, ranging from 4mm to 12mm) 【Premium Material】The coffee tamper is made of food grade stainless steel base with anodized aluminum handle which is durable and rustproof. Ergonomic handle ensures a comfortable grip, you can tamp the ground coffee effortlessly and easily. 【Consistent Pressure】There are many keys to a good cup of coffee, fresh coffee beans, suitable grinding, even tamping... With watchget spring-loaded coffee tamper, both barista and novice can have an even tamp easily. It ensures the ground coffee is thoroughly compacted for even and consistent pressure every time.（The tamper is single spring Loaded Tamper and has a constant pressure (30 lbs). 【Fit for 58mm Portafilter】The 58mm coffee tamper is designed to work with most 58mm(inner diameter) portafilter baskets espresso machines. Matte black coating is anti-stick and fits well on your countertop. 【Great for Professional Baristas】Perfect espresso accessories tool for both home baristas and busy cafes. You will get a consistent balancing force each time tamping. watchget is engaged in providing good accessories to get better coffee. If you have any problems, just contact us anytime and we will do our best to solve it.