Eaton UT3H52353TCH Multi Position Meter Socket - 3 Gang, 200A - Electrical Meter. 

Item is sold as is. To our knowledge this has never left the box, only had the box opened, and should be in good working order. No assurance is made that it is perfectly and fully complete. 

Product Information (please double confirm unit information as needed, the information below is taken from the product description provided by Google):

Physical Dimensions & Weight: