for practical purposes, there is no warranty
the info below is from page #5 here:i.sears.com/s/d/pdf/mp-tc/10022485/prod_20143087912
"Tap and Die Set Tap Wrench or Die Stock
To obtain the warranty coverage stated below, return a defective product with proof of original sale to the Sears Brands Management Corporation authorized retailer from which it was first purchased.
CRAFTSMAN HAND TOOL FULL WARRANTY
If any tap wrench or die stock of this Craftsman tap and die set ever fails to provide complete satisfaction, it will be replaced free of charge. This warranty does not cover taps, dies, screw extractors, or other set pieces, which are expendable parts that can wear out from normal use within the warranty period."