PURPAVWINNER Compatible with Flyco Shaver Heads for FS372/373/318/369, Complete Head Assembly (Three Blades + Three Blade Guards + Blade Holder + Head Cap)

New version blades have square holes, old version blades have round holes, suitable for corresponding models manufactured in 2019 and later

The back of the shaver body has a serial number where the first two digits represent the year of manufacture (18 for old version, 19 for new version)

1. Press the button to open the blade head, grip the small triangle shape

2. Twist the blade frame in the direction of the arrow (opposite direction to tighten)

3. When installing the blade head, align the blade's metal piece with the notch on the machine, press down and pull up to remove the entire head