The 3M PELTOR Guide Post, A46/4, is a spare part for use on select 3M PELTOR Headsets. Used for securing the earcup to the headband, neckband or hard hat attachment. For use on the attachment arms without a boom microphone fixture.The 3M PELTOR Brand is a respected global leader in hearing protection and communication solutions. With production facilities in several countries including the US, 3M PELTOR supplies innovative solutions to numerous industries worldwide including elite tactical military teams and law enforcement agencies. The PELTOR brand is built tough for the working professional.