This is the screw/bolt that sits at the base of your Srixon driver head. It threads into and secures your Srixon driver adapter to the club head.
Srixon screw and washer set compatible with following Srixon driver models:
- ZX5 & ZX7 MK II
- ZX5 & ZX7
NOTE: This screw has a torx bit head and not the square head (See second image).