What is the maximum collet size for your CNC router?

There are several spindle types being used by DIY router designers,
whiat is the maximum spindle capacity of your CNC Router?


Dremel: 1/8", 3/32", 1/16" and 1/32" collets.
Plunge Router: 1/2" and 1/4" collets
Laminate Trimmer: 1/4 in. Collet
Die Grinder: 1/4" Collet
Mill R8 Spindle: 1/16" to 7/8" in 1/32" increments
3mm to 22mm in 1mm increments

1/32 (.03125)
1/16 (.06250)
3/32 (.09375)
1/8 (.12500)
1/4 (.25000)
1/2 (.50000)

Another good one. I'm ER25 with max capacity for 5/8" (0.625") tooling. I wanted to go R8 but couldn't find large enough bearings of good quality and affordable.

JR