So... I recently purchased a BEAUTIFUL 60's single Swivo tom arm on eBay to complete my 1966 Headliner kit. Fantastic chrome, no rust and nothing bent, etc. Even came with 4 original set screws, of which I'll only need to use 2. I truly believe I should have my head examined for what I paid for this piece! At the same time, you get what you pay for and all other arms I've seen for sale pale in comparison!
Anyway, the arm came with 90-degree and 75-degree collet plates, both of which I don't need because they are nowhere as fine looking as the plates I already have. What's really weird is the way the 75-degree collet was machined. As you can see from the pictures showing the swivo hex shaft in place, the rod is offset in relation to the collet fingers! I've never seen this before and wondering if anyone else has ever experienced this. Looking down into the fingers, you can clearly see that the tool to make the hex hole bored grooves right into the fingers! Just wanted to share this with everyone!