These are the most commonly used counter-sink drill bit sizes for mounting alpine ski bindings.
Designed to be used with binding manufacturers mounting jigs.
Measure 2 7/8" long.
- 4.1 x 9.5mm appropriate for most adult skis with a metal top mounting plate
- 3.5 x 9.5mm appropriate for most adult skis without a metal mounting plate
- 3.5 x 7.5mm appropriate for most Jr. skis