Need to cut or repair 1/4-20 UNC threads? This Burkit tap and die set has you covered. The tap is made from 6542 high-speed steel (M2) and is designed for cutting internal threads in through-holes or shallow blind holes (not deep blind holes). The matching die is made from alloy tool steel and is for cutting or cleaning up external threads. Both are right-hand thread, Class 2B/2A accuracy. They feature a straight flute design for good chip removal. You can use these with a tap wrench and die holder by hand, or with a machine like a drill press or lathe (use slower speeds for harder materials like steel, faster for softer stuff like aluminum or brass). Remember to use some cutting oil or lubricant to make the job smoother and extend the tool's life. This is a fundamental set for any mechanic, machinist, or serious DIYer working with metal, plastic, or wood where you need strong, standard 1/4-20 fasteners. The set includes one tap and one die. A solid, basic kit for your workshop.