A stripped or threaded nut or bolt can be a cause of unbelievable frustration, regardless of whether it's on the car, at the job site or even something around the home. A Tap and Die Set like this set from ToolPRO can be the answer to these problems; complete with a durable metal case and moulded plastic tray for easy allocation, this kit comes with taps, dies and their respective holders to re-thread any stubborn nut or bolt. One might be apprehensive about using a tap & die set if they never have before, but they really are quite simple to use. A tap, as the name suggests, is a male threaded tool bit designed to cut a thread into the inside surface of a hole; a process call tapping, which creates a female thread. A die is used to cut male thread on to a cylindrical rod; for example, threading of a bolt. Depending on whether you wish to create a male or female thread, the appropriate holders for each of these are used to slowly cut this thread into the metal, and can be used to either clean a stripped thread, or even create a new thread. Tap & Dies 5mm x 0.80 5mm x 0.90 6mm x 0.75 6mm x 1.00 8mm x 1.00 8mm x 1.25 10mm x 1.25 10mm x 1.50 12mm x 1.50 12mm x 1.75 1/8-27NPT Also Includes 1 x Die Handle 1 x Tap Wrench