Bit Driver Lightweight Variant

This is the “lightweight” version of my other posted bit handle. Has a void in the center to cut weight and filament usage. Wasn't happy with commercially available bit drivers as they don't seem to fit my hands the best, they're either stubby or extremely thin which is not comfortable with extended use. Deigned mine based on some older snap-on and craftsman designs i've tried, while optimizing for my use. May not be comfortable for smaller hands. Has a spot to glue a 4mm wide by 1.5mm tall magnet into the bottom to hold the bit in place.