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It is modeled after Leatherman's bit inserts. We design, build and program Volty here in Minneapolis, MN USA. Leatherman not required, use anything conductive to test batteries! Leatherman Compatibility.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.