PERFORMANCE : 4/6 variable pitch teeth cut faster DESIGN : Extra hard high speed steel teeth DURABILITY : Flexible, shatter resistant steel body for long life VERSATILITY : Drills through wood and steel INCLUDES : 2-3/8" Bi-Metal Hole Saw About Model Makita Hole Saws feature bi-metal construction for longer life. The flexible steel body and the high speed steel teeth combine for more efficient cutting. These versatile saws cut through both metal and wood and have the deep cutting ability to go through 2x4 material. Features 4/6 variable pitch teeth cut faster and last longer Extra hard high speed steel teeth Flexible, shatter resistant steel body for long life Drills through wood and steel Deep cutting capacity through 2x4 material Use with Makita Arbor 714063-A or 714065-A which have 5/8" - 18 thread Specs Product Type (DB, HS) : Bi-Metal Hole Saws Diameter : 2-3/8" Application (DB, RHB, HS) : Steel, Wood Use Arbor # : 714063-A, 714065-A Package Quantity : 1 Shipping Weight : .38 lbs. UPC Code : 088381-902977