M6 x 1.0 ,M7x 1.0 ,M8x 1.25, M10 x 1.5 , M12 x 1.75 .It is suitable for thread repair.The thread is clear and sharp, the size is standard, the cutting is sharp, and the tapping is labor-saving. Multiple chip holes for smooth chip removal M6 x 1.0 ,M7x 1.0 ,M8x 1.25, M10 x 1.5 , M12 x 1.75 .Made of high-speed steel, the cutting edge is sharp and smooth, and there are no burrs, and the chip removal is smooth Tap holder wrench ( M3-M12 ) *1 pc + die holder wrench 25mm )* 1pc .They are strong, durable, strong torsion, and comfortable to hold All sizes are indexed on tray to keep all components organized, with sponge cushion between the upper and lower halves to avoid bits straggling and mixing Cutting External and Internal Threads is a comprehensive set for cutting and renewing external and internal threads to exact standards. This set helps you work with damaged nuts, bolts and threads. When a replacement bolt is hard to find, you can use this thread tap set to remove imperfections from threads