Patent ID: 7658136

Claim:
A holesaw comprising: a cup shaped body having a base and a cutting edge; an arbor extending from said base; a plurality of teeth on said cutting edge, said plurality of teeth comprised of a plurality of repeating segments, each segment including only a first and second tooth form; said first tooth form having a first gullet continuous with a first rake face on an angle from about 9° to about 12°; a first relief face adjacent said first rake face forming a first cutting edge; said first relief face at an angle of from about 30° to about 35°, and said first gullet having a desired depth such that said first tooth form has a first tooth height, said first gullet has a radius with a length between 53% to 56% of the first tooth height; said second tooth form having a second gullet continuous with said first relief face and a second rake face, said second rake face defining a rake angle from about 9° to about 12°; and a second relief face adjacent said rake face forming a second cutting edge, said second relief face on an angle of about 30° to about 35°, and said second gullet having a desired depth such that said second tooth form has a second tooth height, said second gullet has a radius with a length between 54% to 56% of the second tooth height, wherein said second tooth height is greater than said first tooth height and tips of the cutting edges of said first and second tooth forms are along a common line.