American Mailing Solutions inc. supplies are designed to be a true quality alternative to the OEM while offering significant savings. Our broad product line offers a superior product selection, exceptional performance, and significant cost savings. Our mailing supplies are 100% guaranteed universal for all stand-alone postage meters. For Mailstation, DM200,DM200i ,DM100i, E700, E707, K700 . For all SendPro series C200, C300, and C400.