I’ve had these for nearly 50 years. Purchased at my small town Schwinn store. They say Terry’s made in England. What I like is that they are fairly small with a compact spoon and well defined fulcrum points. The fulcrum points and curvature is key. One doesn’t have to insert these as far into the rim, and it is quite easy to hook onto the tire bead. Less leverage is required I have another steel pair and a plastic pair, but these are my favorites.