Hirose is an environmentally aware company and the material selection for the MS-162B is no exception. In addition to meeting RoHS compliant directives, the MS-162B uses beryllium free copper alloy for springs, the insulator material is made halogen free by using a LCP (Liquid Crystal Polymer) material that does not contain bromide, which is typically used as a flame retardant. A plastic, polystyrene reel is used to eliminate the need for a paper/cardboard reel.