To size up the track for your excavators, if you measure the width of the track, measure the pitch lenght (centre to centre of the links), and the numbers of links on the tracks. Also are the links in the centre or offset of the tracks. Does the track have a running rail where the rollers run within. Once we have this information and make and model of your excavator we can sort out the correct size for you.Sizing of rubber tracks for excavators