IDEAL® IRONMAN™ Hole Saw, Bi-Metal, 1-1/4 in Dia, 1-3/8 in Cutting Depth, 4 to 6 TPI, 4 in Overall Length, Steel Body, Use Arbor: 35-394 and 35-395 Standard, Applicable Materials: Machinable Metal Including Stainless Steel, Wood, Nail Embedded Wood, Plastic and Fiberboard