Basic Knobs/Thumbwheels for Metric Nuts/Bolts

These are simple thumb knobs / thumb wheels to turn metric nuts or bolts which are easy to print. There are three sizes currently available.

12mm (external nut size or wrench size) usually found on M8 bolts or nuts
10mm (external nut size or wrench size) usually found on M6 bolts or nuts
8mm (external nut size or wrench size) usually found on M5 bolts or nuts

It turns your metric nuts and bolts into hand-adjustable screws/thumb screws!