For cutting copper wire as much as 600 MCM and aluminum wire as much as 750 MCM, use the Klein Tools Ratcheting Cable Cutter. This cutter includes a hold-open spring that permits for rapid cutting whilst the fast-release lever lets in the blade to open as the tool is being used. This premium hand tool is made in Germany.
From the Manufacturer
Ratcheting cable cutter
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Reduced hand force for more straightforward cutting
Patented two-step ratchet mechanism requires fewer strokes per cut
Cuts as much as 600 MCM Copper and 750 MCM Aluminum
Quick release lever opens blades easily in each and every cutting position, to permit removal of the cable before completion of cut
Hardened steel cutting blades for lasting strength and sharpness