Dremel, since purchased by Bosch, has discontinued producing some on/off replacement switches for some Dremel rotary tools manufactured over 25 years ago.
Kauffman Family Tool had 2 NOS switches in stock and emailed images of both to confirm their correct application. From where I'm sitting no other online company carried this particular rare switch.
Kauffman Family Tool runs an essential business the way most American companies used to operate long before computer algorithms changed the business model and eliminated the emphasis on customer service.
Suffering the humiliation of dealing with a dehumanizing monolith like Amazon is no longer required. Kauffman Family Tool Repair now has that power and it's doubtful Amazon will ever come close.

Great customer service. I had hard to find old parts that were not too pricey. She treated me like I had a large order. Very good experience. Would be the first place to find replacement parts.

I found Kauffman Family Tool Repair while searching the net for some parts for an older Milwaukee drill. Their website showed that they had what I was looking for along with some other parts I wanted in stock.

Since I had never ordered anything from them before, so I had no idea for what kind of service I would receive. But I took a chance since one part they showed in stock, I couldn't find anywhere else.

Well let me tell you that they are a fantastic company to deal with for parts orders. They had everything I wanted, they shipped it quickly and when a couple of questions about what parts I needed came up, they took the time to check with me before shipping the order.

I dealt with Kellie through emails and a couple phone calls over a day or two and without a doubt, she provided what was probably the best customer service I have ever received from any company that I have worked with over the years.

In my opinion, this is a great place to work with and I will definitely keep them in mind for the next time I need replacement parts for my power tools.