The Premium Pasternack PE44054 - UHF Male Connector Crimp/Solder Attachment for PE-B400, PE-B405, PE-C400, LMR-400, 0.400 inch is a high quality all metal Connector With 11GHz of maximum operating frequency. The Pasternack PE44054 - UHF Male Connector Crimp/Solder Attachment for PE-B400, PE-B405, PE-C400, LMR-400, 0.400 inch provides unsurpassed quality and reliability for your mission-critical systems.