Cutting & Trimming Wire Ends Is A Necessary Part Of Any Crimping Operation, and These Blades Are Designed As Replacements For Platinum PN#100054C. This Heavy Duty Tool Is The Perfect Solution When Working With High Performance, Larger Od Cables That Are Tougher to Terminate Due to Larger Wire Gauges, Thicker, Harder Insulation On The Conductors and Pair Separating Splines.