"Greetools Annular Cutters reduce horsepower and torque requirements by only cutting the periry of the hole resulting in a burr-free, reamed-quality hole. As a result, the operation is completed three times faster than costly pilot hole and step drilling. Chip load per tooth is greatly reduced, for high penetration, improved hole quality and longer tool life. The core or âslugâ left behind is evidence of this efficient cutting method. Holes on curved surfaces as well as interrupted cuts can be made without distortion.⢠Drill holes three times faster than with a twist drill⢠Drill on curved surfaces such as pipe or tubing⢠Produce reamed-quality, burr-free holes⢠Overlap centers on existing holes⢠Reduced machine size and horsepower requirements⢠Cutters are made from high-performance M2Individual annular cutters do not come supplied with the center pins. Center pins are required and must be ordered separately.CAUTION: Any cutting tool may break or shatter under improper use. Government regulations require use of safety glasses and other appropriate safety equipment at all times in the vicinity of use."