The Punch is manufactured from quality 303 Stainless Steel and will hold an edge for an extended period of use. Keep it on your key ring. Besides being handy for your cigars, it is the most dependable pen on earth. It will write upside down, underwater, and in extreme temperatures. To use the punch, separate the pen body from the key ring portion and apply the open end of the cap to the center of your cigar. Apply light pressure while rotating the cigar slowly until you are sure youve fully penetrated the cigar cap; 1/16" is plenty of depth.