Usage Tips:This practical tap wrench tool set is a general tool for hand tapping operation. Adopting alloy steel, which is and has . With this set, the internal thread processing will become more easily and precisely, fit for for Model processing, Handmade, DIY use.Feature- Color: as shown.- Material: alloy steel.- Size: 15.2x10.8x3cm/5.98x4.25x1.18inch- Included: 1pc - tap holder, 7pcs screw taps (M3x0.5, M4x0.7, M5x0.8, M6x1, M8x1.25, M10x1.5, M12x1.75) 7pcs drill bits (2.5, 3.3, 4.2, 5, 6.8, 8.5, 10.2)- Made by alloy steel material, which is and has longer service life.- Can improve the efficiency of processing thread effectively.- for manual processing, also can be used for electric tools.- Suitable for model processing, Handmade, DIY use.Package list: 1 holder7 x screw taps7 x drill bit