The metallic core drill bit has a twisted design to drill in through toughest of materials within minutes. This heavy duty tool is meant to give better results than normally used industrial scale equipment of general category. The drilling action using the twisting design metal gives a smooth and natural result for materials like wood, granite, cement. We have years of experience working with drilling machine accessories and promise user satisfaction. With free shipping over bulk buying, we offer the best deals for core and drill bits. Our prices are extremely economical with a promise of highest quality material and best value for your money.