The Rough-In blade is engineered to solve unique frustrations encountered when cutting through-holes during rough-in work. Cuts easily controlled small diameter holes in nail embedded wood. Nail Guard protects against tooth fracture. Fang Tip delivers fast plunge cutting. No. 48-00-1610: Length: 7-3/8 In., Teeth Per Inch: 5 TPI, Type: Rough-In Wood w/Nails, Material: Bi-Metal, Application: Nail-Embedded Wood, Pkg Qty: 5, Package Type: Clamshell