This Faithfull Soffit Cutter Holesaw is a specially designed High-Speed Steel Holesaw fitted with an integral arbor, and replaceable pilot drill. Designed for cutting holes to fit the most popular sized 70mm & lsquoSoffit&rsquo vents, this holesaw is for use on metal, wood, and plastic Replacement Pilot Drill Code FAI HSPD1. Size 70mm.