 Twisted pair jumper wire for use with Krone style IDS blocks. This version is manufactured to BT Specification CW1423, which supercedes CW1257. All cables have 0.5mm solid conductors with coloured PVC insulation and are supplied on 100M reels. Please Note: For more information on the change from CW1257 to CW1423, please view the PDF data sheet available from the link to the left of this page. | 
