I was in a bad position to have 10 O-rings in 3 sizes and 2 varieties. The Internet dealers wanted to see 40€ for this, the car dealer 35€, because both seem to me too much, these are cents articles, I found a local dealer, but paid loudly with the mandibels crunching 25€. That means, I weighed the weight with gold, unfortunately not excessive. There are many O-ring assortments, but did not see any among them, which more than one size of my 3 inside In the end, you are nothing but a nice dump for O-rings that you will never need 90%. I would like to have a range that has many sizes but only a few rings. What do you do there? Greetings