Quill to Ahead converter

Threaded to threadless stem Converter: 1 Inch Quill Steerer To 1-1/8 Inch Threadless Stem

A 1 inch fork has an internal diameter steerer of 22.2

A 1 1/8 Inch fork has an internal diameter steerer of 25.4

We have 2 options:

Profile designs
Converts a 1 inch quill stem steerer to a 1-1/8 inch threadless / Ahead stem

or

Ergotec
Converts a 1 inch quill stem steerer to a 1 inch threadless / Ahead stem.
This also includes a shim for 1-1/8 Quills, and a shim for 1-1/8 threadless stem.
(Does all combos of 1 inch and 1-1/8)