5.1M Zahnradanhänger 1.34.x

Cargo Mass: 27850kg (almost 28t)

Big gear
Diameter: 5.12m (radius 2.56m)
Mass: 26t

Small gear
Diameter: 2.56m (radius 1.28m)
Mass: 12t

NOTE1: Maybe you need to rest several times
before you can see the "5.1m Gear" in jobs list.

NOTE2: You can find the trailer in game trailers reviews:
section: "Semi Lowloader with Drop Deck"
cargo: "5.1m Gear"

Trailer is standalone.
Normal cargo jobs.

Credits:
KalashnikovN