HSS hole saw for wood and metal 200mm bi-metal

Excellent heat resistance and anti-abrasive, high speed steel teeth for fast and clean cuts, enjoys the advantages of high performance, rust protection and durable, designed for repeated use.Fast cutting with ultra-sharp serrations for faster, cleaner cutting.High precision, smooth cutting edges, much more durable and can provide longer service life.The precision of concentric degree, central positioning drill, auxiliary positioning, no deviation.Scientific design, newly designed chip removal groove, it can unload the chip quickly, and will not cause cracks, no stuck workpiece problem, more free from sheddingAnti-slip, stronger load torque.