How to identify Spidertrax spacers?

[PJP71]

Are there any identifying markings to know they are Spidertrax? All the photos i've seen don't show any. I found a good deal on a used set and want to make sure.

 

[SA-Overland]

Are there any identifying markings to know they are Spidertrax? All the photos i've seen don't show any. I found a good deal on a used set and want to make sure.

Yes, on the back side of the spacers, they are stamped with the name SpiderTrax as well as the part number.

 

[PJP71]

Thank you! Seller said there are no markings so you saved me.