Quick mask buckle or clasp

Adjustable clasp designed to work with elastic or no elastic facemask straps that go around the ears or around the head. This first version has a thin base to reduce plastic usage and allow for faster print times.

Designed with 2 posts along the first strap slot to prevent strap slippage no matter the material.

To use, slip knob into the oval hole with pieces at a 90-degree angle then rotate so two clips are parallel, reverse to remove.