I have at home hair cutter Phillips C-242. Original adapter allow set hairs lenght between 0,5 - 2 cm. I made extended adater for maximal cutted hairs lenght about 3,7 cm.
Printed from PLA.
For better adhesion I used some brim for teeths.
Printing the overhangs maybe a little difficult (the edges are lifting up), I used 0.5mm z-lift for printing.
A little shape modification of holders (with small file) is needed for smoother click-mounting.