These essential files can repair damaged external threads on studs, bolts, screws, pipes, and fittings. Suitable for both professional and everyday use. Easily restore right-hand and left-hand external threads. Features durable and fast cutting teeth. Save time and effort by repairing damaged threads on multiple fasteners for motorcycles or ATVs. Specifications: SAE/UN: 12, 13, 14, 16, 18, 20, 24, 28 Pitch: 0.75, 1.00, 1.25, 1.50, 1.75, 2.00, 2.50, 3.00 Groove type: Straight groove Material: Steel Hardness: HRC48-50 Color: Black Package Contents: 1 x Thread Repair File (other items shown in the image are not included) Note: Only the items listed above are included. Light reflection and different displays may cause slight variations in color between the item and the image. Measurement may vary by +/- 1-3 cm.