5 Pack, 7-3/8" x 1/2" x.062", Rough In Sawzall Blade, 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 Design Protects Against Tooth Fracture When Cutting Holes Through Nail Embedded Wood, Fang Tip Delivers Fast Plunge Cutting Through Bottom Plates & Subfloors.