Tethered EURO Coupler air Cap / fitting / plug

My air tools dont have caps on them, and if they do, they're just plugs; easy to lose.
Not anymore!
Male and Female for EURO couplers

Print in TPU 100% infill. (i used Bambulab TPU 95A)
Tethers should be able to stretch over the couplers without a need to disassemble.

Stepfile and fusion360 file included for adaptations