Direct from UK MoD, one pair of Heavy Duty Aluminium Folding Quad Bike Ramps .
They feature:
Length 3.1m per section
2.5m gap crossing rating
SWL Per Ramp 600kg
Approx dimensions (each ramp):
Length when laid flat: 310cm
Length when folded: 158cm
Overall width: 40cm
Tyre width: 34cm
Height when laid flat: 10cm
Height when folded: 25cm