【Wide field of application】 Crushed, peeled and red weapon. Suitable for wood, plastics and other soft materials, carving, engraving, recessing, chamfering, slitting, rubbing, etc. 【Good quality and very stable】 Convenient to control, easy to operate, safe and reliable, can reduce labor intensity and improve the working environment. 【Work The workmanship is very good】 This is a set of knives that can be used with a battery or a drill. Due to the different sizes, it is suitable for all arbites, which is very convenient. 【Advantages】 The material of the drill bits is high speed steel, good hardness, low performance, high grinding speed, easy cutting, safe storage and durability. 【Perfect for the hobbyist hobbyist】 Usually with manually operated power or pneumatic tools (can also be used in machine tools). For home craftsmen use very well suited and also meets the requirements. Note: This rotary file kit is intended for softwood, plastic and other soft materials. Do not use it for