CNC-ed screw driver for Miyota and Seiko rotor switching
DIY Watch Club - Tailor-made CNC-machined Watch Screwdrivers for Miyota & Seiko Rotor
DIY Watch Club - Tailor-made CNC-machined Watch Screwdrivers for Miyota & Seiko Rotor

DIY Watch Club - Tailor-made CNC-machined Watch Screwdrivers for Miyota & Seiko Rotor

Regular price
¥2,600
Sale price
¥2,600
Tax included.


A tailor-made CNC-machined screwdriver designed for screwing and unscrewing automatic rotor for Miyota 8 series and Seiko NH35 movement.

We specifically designed the screwdriver along with the CNC-machined tip to provide the best grip for Seiko automatic movements, as we know how painful it can be when we strip and scratch the ball bearings of the rotors of our favorite modded Seiko.

Use case:

  • Installing custom rotor
  • Fix loose rotor

Key specs:

  • CNC-machined precision tip for perfect grip.
  • Tip width: 2.5mm
  • Tip thickness engineered to fit Miyota and Seiko rotor screw slot
  • Anti-slip handle
  • Ergonomic top end for easier application of force
  • Ball-bearing equipped for better tactile feedback on the resistance when tightening the screw. Prevents over-tightening 
  • Replaceable tip