The 688-20024 is a 3/8 inch high-speed steel aircraft extension drill with a 12 inch overall length. It is classified as a fractional H.S.S. aircraft extension drill in the High Speed 12" OAL series.
This type of extended-length drill is typically used for drilling applications that require additional reach or access to recessed and otherwise difficult-to-reach areas.
- Model: 688-20024
- Drill size: 3/8
- Material designation: H.S. (high speed steel)
- Type: Aircraft extension drill
- Overall length: 12"
- Size format: Fractional
