Hello - I have this older box and don't know the history of it. The bottom left drawer slides are broken and I'm looking to see if anyone could point me in the correct direction on replacement or upgrade options. I looked all over the box for some kind of identification but haven't been able to locate anything. At this point I'm not even sure if it really is a Snap On as I haven't been able to locate any additional Snap On markings other then the one on the front. Thanks in advance for any assistance in identifying the box or drawer slide options.