FEATURES: 1)Time & Money SaverE-- xternal Capacity: 1-1/4" to 5 inch O.D. Eliminates the need for expensive thread-cutting equipment. 2)Function-- Replace OTC 7402 & 202817 Metric Die Set. Immediately Save, Repair & Bring Damaged Threads Back to life. Quickly restore threads to near original condition. 3)Benefits-- The die cast alloy V-pad will not damage the threads. V-pads and dies can be replaced when worn out. PRODUCT DESCRIPTION: Reason for buying it: Damaged bolt or nut threads can be an annoying, costly problem-unless you have one of our thread chasers. .