detail

metal

machine

industry

industrial

steel

technology

part

iron

background

equipment

engineering

metallic

round

gear

wheel

engine

dark

mechanical

machinery

work

technical

motor

tool

closeup

manufacture

precision

white

mechanism

blue

mechanics

macro

mechanic

screw

plug

new

production

repair

turning

factory

alloy

design

joint

circle

fitting

silver

connection

energy

advertising

automotive