adjustable
art
bolt
build
concept
construction
contour
design
development
direction
dots
element
engineer
engineering
equipment
fitter
fix
flat
graphic
hardware
icon
illustration
industrial
industry
isolated
key
line
linear
lineart
maintenance
mechanic
mechanical
object
options
outline
profession
random
repair
service
sign
spanner
steel
support
symbol
technology
tool
work
workshop
wrench