I make miniature Morse code keys for amateur (ham) radio operators and they are used all over the world. The switch arms are mounted in precision bearings and I have bought and used hundreds of bearings from Wynch Bearings. They are always excellent quality at a fair price, they are shipped usually on the same day and arrive very quickly. A fast and reliable supply chain is a key consideration for any small manufacturing business and I can manage my stock knowing that I can replenish my bearings reliably and with a very short lead time. Excellent service, highly recommended. Thanks