ID Card holder with Credit Card Multi-Tool recess and Key ring attachment

A compact strong NFC card holder with a recess for a multifunctional tool (something like this). The wallet has raised friction pads at the front top prevent the card from falling out. Clearances are snug with space for one card. You can modify the height for another or have t back to back.

Its an open design for ease of access and has no NFC or RFID blocking (my specific application needs). Its print in place on its flat base with no supports required for the grooves and slots.

It features 2 standard 25mm Dia 2.5mm box section arc'd loop for a key ring to pass through. The raised friction ridges reinforce this cavity and prevent the card from falling out. 

The multifunctional tool blocks RFID's from one end and can be used in a modified version to be more secure.

Curved edges make it nice to hold!

I used a Prusa Core One with 0.2mm layer heights on a 0.4mm nozzle, 4 perimeters, 10% infill, no brim or supports, White Prusa PLA. Step files are included should you want to modify it.