This Platform Pedal accepts a screw in cleat and can clip into your mountain bike pedals when you are just riding around town,

The pedal supports standard 2 Hole cleats with a 15mm spacing and M5 threads.

Holes are provided for two M5 nuts.

I printed this out of ABS with my Bambu printer for good results

For best strength, print with no more than a wall thickness of 2 and use a higher fill factor.

Cleats: 2 Pieces Bike Cleats (https://a.co/d/4mtYnCF)
Nuts: M5-0.8mm Hex Nuts,200 Pack 304 (A2-70) Stainless Steel (https://a.co/d/1CZld7t)