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The existence of electric drills makes woodworking work more convenient and labor-saving, but sometimes, manual drills are more suitable for drilling holes in narrow spaces, and they are more controllable, lighter and less noisy when working. There are two types of hand drills: straight drills and c
Hole saw refers to a special circular saw for cutting circular holes in modern industry or engineering. The depth of hole opening is different. We are divided into two types: standard hole saw and deep load hole saw. It is installed on electric tools such as hand drills, impact drills, radial drills