1) aggregate of grain size 2/8
2) aggregate of grain size 8/16
3) macadam 63/125
4) natural aggregate of size 0/4
5) aggregate of grain size 22/45
6) aggregate of grain size 32/63
7) aggregate of grain size 0/32
8) aggregate of grain size 0/63
9) bucket teeth of an excavator
10) drill bit of a drilling machine
11) models of wheel loaders at scale 1:50
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