Milton CAT 305.5E CR - Manual (Page 9)

Undercarriage Stability and Durability
Rubber Track – The standard rubber track lets you work on multiple surfaces such as grass, pavement or stone without damaging
the surface or machine.
Steel Track Option – Optional steel track is available for harsh conditions such as demolition. The extra weight of the steel tracks
generally provides better stability when digging over the side of the machine. (Not available on the 304E CR.)
Rubber Pads – Optional rubber pads can be attached to the steel track to prevent damage to paved surfaces and minimize noise
and vibration during travel with the steel track system. This option provides the maximum overall stability.
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