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The product is a vintage 6-piece SAE double box wrench set by Proto, ranging in size from 3/8\" to 1\". Made in the USA, this set includes 12-point drive type wrenches suitable for automotive use. With the manufacturer part number 6406, this set is a valuable addition to any tool collection for professionals or DIY enthusiasts looking for high-quality and durable wrenches.
Vintage NOS Challenger by Proto 6 piece box wrench set SAE 3/8” to 1” with metal holder, includes 3/8”&7/16”, 1/2”&9/16”, 9/16”&5/8”, 11/16”&3/4”, 13/16”&7/8”, 15/16”&1”.
![Vtg NOS Challenger by Proto 6 pc SAE double box wrench set 3/8\](img-large/g/PkEAAeSwATdqDjNh/s-l1600/Vtg-NOS-Challenger-by-Proto-6-pc-SAE-double-box-wr.jpg "Vtg NOS Challenger by Proto 6 pc SAE double box wrench set 3/8\")
