bound
cable
chain
chained
chrome
connection
construction
cutout
detail
element
equipment
heavy
industrial
industry
iron
line
link
linked
lock
many
materials
mesh
metallic
net
object
power
powerful
prison
protection
pull
reliable
safe
safety
secure
security
separate
shape
shiny
silver
slave
slavery
spiral
steel
strength
string
strong
tool
web
white