Double ended hollow core bit driver

Double ended hollow core bit driver

Designed for use with 1/4 inch (actually 7.5mm) screwdriver bits One shallow well and one deep well for long and short bits. Hollow core saves filament, print time and reduces weight while infill for maximum strength can be increased. 40 mm diameter handle offers increased torque to bit. 100mm length with tapered ends offers increased visibility and comfortable distance from work piece, while also allowing for full palm grip.