There are many sd card holders, but this one holds the cards firmly in place with a click-in action. The case is rugged and dust proof to take your sd cards on the road.
You need 4 pcs of M3x35mm screws. Small head screw preferred (5,5mm).
Print with PETG with 0.2mm layers and 20% infill. Print the clamp with 100% infill.
The clamp is closing tight, you may want to sand a bit to get it looser.
The author hasn't provided the model origin yet.