Product material: high speed steel (HSS) The material is suitable for low hardness materials such as wood, aluminum and iron. Product package weight: Six-piece set 82g Scope of application: This product is suitable for rapid drilling and tapping processing. Durable, it is recommended to use on the tapping machine. When using the hand drill, pay attention to the operation method. Excessive shaking and tilting will affect the tapping and even break the tap! ! ! Product specifications: Six sets of metric: tap diameter M3, M4, M5, M6, M8, M10.