COMPLETE TOOL KIT - For easy and precise installation of MC4 solar connectors Precise crimping die design and full locking ensure high crimping quality during repeated crimping (2.5/4/6mm²) HUMANIZED HANDLE DESIGN - Comes with a set of dies in the handles for easy energy-saving use. APPLY FOR - MC3 MC4 & TYCO solar connector crimping tools/solar PV tool kits MC4 SOLAR CRIMPING PLIERS - Suitable for PV cables for solar modules from 2.5 to 6.0mm². Its lightweight and compact design guarantees a perfect crimping effect.