You are looking at a girder for OO gauge model single railway track.
Girder Sizes : 135mm L x 62.8mm W x 22.8mm H
Please Note: These items are 3d printed, far more sturdy than laser cut cardboard models, all items come unpainted and any images showing the items painted or as a group are just for illustration purposes only to show you what can be achieved with them.Printed in grey