Also known as: BLR-13218, BLR13218; Features and Benefits: Includes 1/4", 5/16", 3/8", 7/16", 1/2", 9/16" and 5/8" cutters, arbor and 3 extra pilots When you donGÇÖt have a lot of holes to make, Blaircutters provide fast, accurate holes in materials up to 3/16" thick Blaircutters are annular cutting tools that cut around the edge of the hole and eject the center as a slug Sping loaded pilot "pops" the slug from the cutter Packaged in a blow molded caseBecause theyGÇÖre hollow thereGÇÖs no dead zone as with twist drills. And unlike hole saws , that rip and tear through the material, they quickly give you quality, virtually burr-free hole.