3-1/4" | Mag-Bit 909.5216| Countershark | 1 Piece finish-black-phosphate General purpose - fast cutting

General purpose - fast cutting

USE STEP-DOWN PANELS where the gutter has been installed with Speed-Screw and Quick-Screw hangers

Made from M42 Cobalt High Speed Steel for excellent wear resistance on high-strength materials

• 2 spurs for boring clean holes

General performer for root pass grinding in the oil and gas pipeline industry

3-1/4" | Mag-Bit 909.5216| Countershark | 1 Piece finish-black-phosphate General purpose - fast cuttingCounter bore for use in all types of wood. Use with Mag Bit Shark bit or MAG303DLX, 357DLX, 735, 715 and 710 auger bits 5 8" diameter or larger to drill clearance holes for bolts and countersink the head and washer in one action. Securely attaches to bit with a heavy duty set screw. Six super sharp teeth on the outer diameter cut a clean hole and leave a smooth finish at the bottom of the workpiece. Packaged in a clear plastic clamshell