This is the sharpest strongest replacement razorblade knife available with blades that change safely and easily at the push of a button. The blackoxide coated blade holder supports the razorblade for the strength of a standard knife and sharpness of a surgeon s scalpel. The 3.5 Japanese 420J2 stainless razorblades are precisely heat treated and hand finished shavingsharp. The double molded Grivory handle features rubberized TPR inserts for a nonslip grip even when wet. The double sided thumb stud allows easy onehand opening and the replaceable pocket clip contours with the handle so it feels like an integral part of the grip. It comes complete with six replacement blades."