機器
accessory
background
bolt
bolts
bolts and nuts
close
closeup
connection
construction
detail
diy
equipment
group
hardware
head
heap
industrial
industry
iron
maintenance
many
material
mechanics
metal
metallic
nut
nuts
nuts and bolts
object
objects
old
old stuff
part
parts
repair
rust
rusty
scrap
screw
screws
steel
washer
work
workshop