- ✔️【DRILL BIT DIMENSION】:7/16″(Diameter) x 4-1/16″( Flute Length) x 5-1/2″(Overall Length)
- ✔️ 【MATERIAL】: HSS Steel Enable Harder Drill Body to Keep Longer Drilling Life.
- ✔️【SURFACE TREATMENT】: The Gold/Black Oxide Surface Treatment Strongthen the Hardness of Drill Bit body.
- ✔️【 PARABOLIC FLUTE DESIGN】: Parabolic Flute Guarantee Quick and Easy Chips Removal and Fast Penetration.
- ✔️ 【SPLIT POINT ANGLE】: 135 Deg.Split Point Cutting Tip Ensure Easy Centering and Better Drilling