This Replacement Blade Kit for Klein Tools' Compact Pass-Thru Crimper can cut paired-conductor cables (round STP/UTP and flat-satin phone cables), and works on 28-22 AWG round, solid or stranded wire. The heat treated blade can make over 2,000 cuts, and trims flush. The Blade Kit comes with a replacement screw, and is for use with Klein Tools Compact Pass-Thru Crimper Cat. No. VDV226-005.