This Taps Set Used for machining nuts or other common thread on the machine. High speed steel 4241/bearing steel material, suitable for plastic and soft metal, such as aluminum plate, iron plate. High quality and exquisite workmanship. With these machine hand taps, you will have a smooth tapping experience with them. Features: 8pcs Thread Plug Taps Set M3 M4 M5 M6 M8 M10 M12 with 1pcs Adjustable Tap Wrench 1/16-1/2''. Adopting high speed steel with high wear and heat resistant, which is durable and has long service life. All-steel design with chromium-plated finish for the highest durability. Easily switched from left to right handed operation, or locked for non-ratcheting use. Multicoated optics guarantee superior light transmission and brightness. Ideal for auto repair and machinery where metric threads are specified. 7 different sizes from M3 to M12 that you can use for tapping various threads. Standard thread distance design, clear and tidy, no burr. Specifications: Material: High speed steel Type size: M3, M4, M5, M6, M8, M10, M12 Package size: 28*11*2.2cm/11.02*4.33*0.86in Package weight: 230g Note: Item color may show sight aberration due to different shooting light and monitor display. Packing list: 7* Screw Taps 1* Die Holder