RFID Key Ring — compact RFID tag holder

A simple and durable key ring designed for RFID tags (125 kHz / MIFARE).

Perfect as an access key, badge holder, or everyday accessory. Prints easily without supports and fits well on any FDM printer.

Internal slot for chip:

Height: 2.2 mm

Diameter: 20 mm

Dimensions key ring:

34 × 28 × 6 mm

Weight: 3.91 g (PETG, 25% infill)

Material: PETG

Nozzle: 0.4 mm

Layer height: 0.20 mm

Infill: 25% (Cubic)

Supports: None

Brim: None

Nozzle temp: 230–240 °C (PETG)

Bed temp: 70–80 °C (PETG)

Orientation:

The model is optimized for printing — use auto placement in your slicer. Stable base, no supports needed.