Axle stands are types of weight supporting equipment, they are used with vehicle jacks and are designed to take the weight of the vehicle when they are positioned correctly under the vehicle.
There are a range of types, each of these are designed for a particular application and should NEVER be used for a job for which they not recommended. They normally come in matched pairs and should be used in those pair whenever possible.
Stands are load rated, and should only be used for loads less than the rating indicated on the stand.
Source: CDX Global & Wikipedia - en.wikipedia.org
