Cuts hand drawn copper up to 400 KCMIL (MCM) and soft copper, aluminum and multiple conductor cable up to 600 KCMIL (MCM) Hardened steel blades ensure consistent cuts and long-term durability Rounded blade design minimizes cable distortion during cutting Quick release mechanism simplifies blade back-out Locking mechanism keeps handles closed for easy storage Ergonomic, non-slip handles CAUTION: Comfort-grip handles are not designed for protection against electrical shock. Do not use on live circuits. Max jaw opening of 1.375 in.