OTCs Replacement Metric Thread Die Set for the Universal Outside Thread Chaser includes 3 dies with multiple thread sizes per die. Includes the following: 1 mm, 1.25 mm, 1.5 mm, 1.75 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm pitch dies. Sizes are clearly stamped on the head faces for easy identification. Strong cutting surface ensures cleanly trued threads and a long service life. Value is at the core of the OTC tool and equipment portfolio. Whether it’s a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it’s a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians’ productivity and shop profits.