The hub I have is a 26mm axle but the Thinja has a 20mm axle. I decided to make some sleeves that slide into the stock ktm spacers. These spacers took forever for a rookie without the proper tooling. I had to drill the blank with as large a bit as possible then I used a boring bar to get to 20mm. Whats the proper tool for this, 20mm drill bit or reamer? Oh well, i'm learning the hard way as usual.