All new manufacture sockets (NEW- prefix) are RoHS compliant, and a certificate is available on request. Note that the pictures are not to scale. If you do not see a socket you are looking for, just ask. Our high quality new old stock sockets (NOS- prefix) are from companies like Amphenol, Cinch, Eby, and other military suppliers. We try to find and buy these, but stocks are limited. Note that the pictures are not to scale.