Precision European-made, quality watch screwdrivers in 9 sizes: .60, .80, 1.00, 1.20, 1.40, 1.60, 2.00, 2.50, 3.00 mm. With hexagonal, swivel heads to prevent rolling and knurled handles for firm grip. Color identifier bands allow for easy selection and set screw holds blades securely. Kit contains 19 extra blades and 2 extra set screws.