If you are looking at vessel screwdrivers, you have probably heard how good they are. In addition to removing ancient JIS screws with ease, these tools have whitened my teeth and made me more attractive to my mate. My vintage Japanese motorcycles all sighed a breath of relief when these arrived. I now leave that drawer on my tool box opened with pride. Rumor has it a #3 will cover most jobs, but I was surprised to learn my bikes actually have all 3 sizes on them. Glad I bought a set!