Design for a screwdriver/ bit holder with some cool features:

Knurled extra grippy exterior

Space for ¼ hex bits: either 6x 25mm bits or 3x 50mm or combination

Cap can be used as stubby driver

2 cap designs

Space for optional 5mm diameter magnets at the bottom of the hex holes.

Dimensions

Length: 102mm (domed cap), 97mm (flat cap)

Diameter: 24mm

Inspired by Starrett Automatic centre punch