1:150 Scale, but it can be resized to fit other scales.
3 Log Skidders (claws must be made from wire after printing)
2 Generic Large 6x6 trucks (really too large
2 Backhoes
1 Bulldozer
3 6x6 ATVs
3 8x8 ATVS
Also I should mention that all of these are available individually.