Review on WINIBULA Coffee Stainless Measuring Espresso by Michael Vargas

They do what they say well and very well. I use them on whole beans and they match the markings on my coffee maker perfectly. 8 scoops = 8 "jars". I also use one for my aero press at work. 2 tablespoons beans = 1 strong "cup" Aeropress. They grab both 12 ounce bags and 2 pound bags very well. They don't feel strong enough to be stepped on and will be fine, but I don't need that. The springs on the clamps don't weaken or loosen as quickly.