No.1x25 Phillips Bi-torsion Screwdriver Bit(s) (1/pack)

Features :
Distinct green "pigeon ring" on the middle of the bit.
50-52 Rockwell hardness underneath the ring.
63 Rockwell hardness either side of the ring.
The harder outside gives the tip extremely long life.
Application : Ideally suited when screwdriving into all WOODWORKING applications.