DR-423 Lock Extension

Extension bit with a one-touch locking mechanism that secures the bit simply by insertion.
Proprietary bit retention mechanism prevents accidental bit drop.
Compatible with ultra-short 18 mm bits.
Slim 10.5 mm tip diameter for easy access in confined spaces.
For extending 6.35 mm hex shank bits and drills in confined and recessed spaces.
Note:
Do not use with impact drivers.
Bits with a groove located 14 mm from the tip or bits without a groove cannot be used.
When using bits with two grooves, do not use on screws M8 or larger.