Description:

Tianchi grinding of high-speed steel Hole saws made of high quality high speed steel grinding, and sophisticated technology, reamers and durable than the average coefficient is very high, more cost-effective. Undergo a special heat treatment, sharp cutting edge, high hardness, more accurate positioning, high precision, stable cutting, impact resistance, high toughness and extraordinary ability to drill. Suitable for stainless steel, iron, steel, aluminum and other metal plate hole job.

Adding water helps to extend the service life!