Pusher for Seiko 6139-7000 6139-7001 6139-7002 Push Button – A parts
Pushers / Pusher's Springs – A parts
Screw down chronograph pushers | WatchCrunch
The Worn & Wound Podcast Ep. 157: October Recap - A New Speedy with a Hidden Talent, the "Captain Willard" Gets Reviewed, and the Debate over Screw-Down Pushers - Worn & Wound
Pusher set for Seiko 6138-0011 UFO chronograph, Speedtimerkollektion