The U rated outer shell is approved for underground use. The molded BNC connectors have a locking groove used for professional CCTV equipment. 25' BNC to BNC RG59U Cables Regular price: $29.00 Sale price: $20.00 50' BNC to BNC RG59U Cables Regular price: $39.00 Sale price: $30.00 Copyright 2006 Capon Security, Inc.