Convenient, compact inker delivers clear, clean, permanent fingerprints but leaves no residue on your hands. Will not stain fingers. Pad with adhesive backing stays put-no slipping and sliding. Excellent for use in authenticating checks, legal documents and personal papers by putting your unique finger print on them. Round Pad. Stamp Pads Type: Inked Fingerprint; Ink Pad Type: Conventional Pad; Ink Color(s): Black; Size: 1.5" Diameter.