The JTWEB brand is committed to providing customers with high quality products and comprehensive services. Our products use advanced technology and quality materials to stand the test of time and maintain aesthetics. 13 PIECES PROFESSIONAL COBALT TWIST DRILL Instructions for Use - When working with manual drills, pay attention to the rotation speed adjustment, the drill bit is easily damaged if the rotation speed is too fast. - For metals with high hardness and many impurities, the speed is slower than normal drilling, and the cooling effect is better. - Do not knock when using this product, the work needs to be fixed, and the swing of the work during operation will break the drill.
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