Big hawg, 1-3/8", carbide hole cutter, 50 times life in nail embedded wood & abrasive material applications, cuts 1,000 plus more nails, 5 times faster cuts, carbide tipped multi-material pilot bit for increased material versatility, thicker backer for extreme life in demanding applications, optimized slot design for fast plug removal, enlarged braze surface for stronger bond to the carbide teeth, cuts wood, nails, shingles, cement board, plaster & more.