Leatherman CHARGE TTI (Titanium) with Premium Sheath + Leatherman 40-Bit Assortment + Leatherman Bit Driver Extender An improved, high-carbon (HC) form of 420 stainless steel. S30V blades hold an edge approximately six times longer than 420 stainless steel. Titanium has similar properties to steel but only 60% of its density making tools lighter.