No numbers need 2 sets of rollers and track insert

Hello,

Unfortunately, we do not carry an exact replacement for your roller assembly. You can start by taking a look at the 81-138 tandem roller with 1-1/8" diameter wheels. Compare the dimensions below to determine if you might be able to adapt this to work for your repair. Please note that you will need to reuse that top nylon bracket attached to your roller. Thank you. 

Alternate image for 81-138