,Ergonic handle conforms complete to users hand providing the ability to generate up to 30 percent more torque, Blade type printed on top and on gri p of handle for fast identification of screwdriver tip type, Anti-roll handle design resists rolling on inclined or vibrating surfaces, Precision machined black tips ensures the screwdriver tip always fits easily and precisely into the screw head, Lifetime warranty dversatile , Ergonomic the first handle that adapts to the users hand dversatile Smooth seamless handle for maximum comfort dversatile Hand & handle interlo ck causing less strain dversatile Anti-roll handle design dversatile Blade m anufactured from chrome molybdenum vanadium steel dversatile Hardened tipped for precision fitdversatile