Sold 5 Per Pack Rough-In Sawzall Blade The Rough-In Sawzall Blade Has Been Engineered To Solve The Unique Frustrations Encountered When Cutting Through-Holes During Rough-In Work. It Cuts Easily Controlled Small Diameter Holes In Nail Embedded Wood Like No Other Blade On The Market. Features: *Low Blade Profile Cuts 2-1/8" Diameter Holes For 1-1/2" PVC Pipe. *7-3/8" Length Allows Blade To Cut Holes Through Double Top Plates. *Nail Guard- Unique Design Protects Against Tooth Fracture When Cutting Holes Through Nail Embedded Wood *Fang Tip Delivers Fast Plunge Cutting Through Bottom Plates And Sub-Floors.