metal cog wheels in open planetary gearbox of power drill on dark background

abstract artistic background black blue case circle closeup cog cogged cogs cogwheel component copy curve dark design detail disassembled diy drilling educative engine engineering epicyclic external focus gear gearbox gears gearwheel gun hole industrial industry inside interlock internal involute machine machinery mechanic mechanical mechanism metal metallic nobody nopeople open part planet planetary power precision quality repair ring rotate rotation round screw selective service space steel technical technology teeth threaded tool train wheel wheels white