These are the ones we use & like. Three thin, strong, nesting, plastic levers from Germany. They take up no space and if your tires fit tight to the rim, they'll save the day.
How to use: Insert all three, each about 4 inches apart. We need a video. It's easy. These are the best. We hear (from Schwalbe) that there's a new one that's better. MayBE, but no need. These are the best I/Grant have used, and I've used at least thirty styles over the decades. You shouldn't NEED the improved version. The fundamentals are the same.
Think you got a defective Schwalbe tire? Click here.