Power Bit Extension accepts 1/4 in hex power bits. Ball bearing on holder provides a positive lock on 1/4 in hex shank power bits.
Malco® Power Bit Extension, 1/4 in Shank, 6 in Length, Tapered Steel
- Material Tapered Steel
- Shank Size 1/4 in
https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/Malco_CT425_Warranty.pdf
VIDEO LINK- 9/16 in dia nose