Type: singly. in foil Content: 13 blades Measuring range: 0.05 - 1.00 mm / .002 - .040 inch Composition: 0.05-0.10-0.15-0.20-0.25-0.30-0.40-0.50-0.60-0.70-0.80-0.90-1.00 mm .002-.004-.006-.008-.010-.012-.016-.020-.024-.028-.032-.036-.040 inch for standard purposes. like thickness measuring between narrow slots and for automotive- and engine industry ; hardened spring steel. conical shaped blades. 100 mm length ; nickel plated case with lock nut. sizes in mm and inch on each blade ; thickness tolerance in relation to the metric sizes made in china