: With the essential tap wrench and die holder, coarse and fine threads can be made, and these threading tools are machined with close tolerance to meet your high standard application requirements. : Our metric die and tap sets are perfect for threading and rethreading, creating new threads and repairing worn-out threads on stainless steel, carbon steel, copper, brass, aluminum, cast iron, and wood in many fields, and are easy for you to use. : All the tools of the tap and die kit are well organized in a blow-molded case, it is portable and convenient for you to sort and carry the thread tool.