You basically have to dig around and hope to find some kind of comment or 3rd party review like this: https://www.amazon.com/gp/customer-reviews/RBMOXF4TR5678/

You basically have to dig around and hope to find some kind of comment or 3rd party review like this: https://www.amazon.com/gp/customer-reviews/RBMOXF4TR5678/ref=cm_cr_dp_d_rvw_ttl?ie=UTF8&ASIN=B0042F8BG4 https://www.amazon.com/gp/customer-reviews/RBMOXF4TR5678/ref... TLDR - he found out what factory in China the product is made in, then did a comparison test with a similar tool made in the same factory but at one third the cost. Found the cheaper tool was higher quality.