Roller with Extension

Thanks for posting. This roller looks like our 81-156, and this is indeed what we've recommended in the past to replace the exact one you have. Look over the dimensions below to confirm it matches your old part. Now, that extension is the adjustment screw and is not meant to be removed; it adjusts how 'high' or 'low' the roller assembly (and thus, the door itself), raises off the track. Provided the dimensions of your old roller are identical to what is listed below, then the 81-156 is our best match. Note that we also carry a stainless steel version if that interests you: see our 81-156SS. Let me know what you think.  

Alternate image for 81-156

Great! We appreciate the business, thank you. And yes, a long screwdriver should make up for the shorter adjustment screw no problem.