Learn more about Foredom's 1050! Up to 50,000 RPM. Dual port can accommodate optional brush type handpiece. See Product Options for Collet Size.
Collet adaptors:
https://www.foredom.net/product/hpl4-3235-collet-adapter-3-0mm-to-3-32/
1050 options:
https://www.foredom.net/product-category/micromotors/micromotor-kits/brushless-dual-port-kits/