Feature●[Refresh Your Threads]: With the ABN 49 Piece Thread Repair Kit with Metric and Standard sizes you can clear debris and correct damaged threads●[Right Die for the Job]: SAE Dies 1/4-20, 5/16-18, 3/8-16, 7/16-14, 1/2-13, 9/16-12, 5/8-11, 1/4-28, 5/16-24, 3/8-24, 7/16-20, 1/2-20, 9/16-18, 5/8-18; Metric Dies M6-1.00, M8-1.25, M10-1.00, M10-1.25, M10-1.50, M11-1.50, M12-1.25, M12-1.50, M12-1.75, M14-1.50●[Give it a Tap]: SAE Taps 1/4-20, 5/16-18, 3/8-16, 7/16-14, 1/2-13, 9/16-12, 1/4-28, 5/16-24, 3/8-24, 7/16-20, 1/2-20, 9/16-18; Metric Taps M6-1.00, M8-1.25, M10-1.00, M10-1.25, M10-1.50, M11-1.50, M12-1.25, M12-1.50, M12-1.75, M14-1.50●[Rethread Your Bolts]: 1 - SAE file for sizes 11, 12, 13, 14, 16, 18, 20, 24; 1 - SAE file for sizes 9, 10, 12, 16, 20, 27, 28, 32; 1 - Metric file for sizes 0.75mm, 1.0mm, 1.25mm, 1.50mm, 1.75mm, 2.00mm, 3.00mm●[Quality Construction]: Alloy steel tap tool set is hex-shaped to fit wrench or sockets; Blow-molded 12 x 9.25 x 1.96in (30.48 x 23.5 x 5cm) plastic case has embossed size labeled slotsDescription When cleaning threads or repairing worn bolts, achieving a tightly threaded fit is vital. The ABN Bolt Thread Repair Tool Kit for Thread Chasing comes with both metric and standard sizes to always have the right tool for the job. This 49-piece rethreading kit comes with 14 SAE die sizes 1/4-20 through 5/8-18, as well as 10 metric die sizes M6-1.00 through M14-1.50. Metric and SAE rethreading files accommodate sizes 9-32 (SAE) and 0.75-3mm (metric) to repair your exterior thread-stripped bolts and screws. Taps can clean and recut internal threads standard-sized 1/4-20 through 9/16-18 and metric-sized M6-1 through M14-1.5, while the dies are designed for external threads by hand. Pro Tip: use a rocking motion to advance the threads and clear any loose chips to avoid binding. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.