Lenox Tools 1779802 3L Arbor with 3-1/4-Inch Pilot Drill Bit for Hole Saws None Imported The product is 3L 3.5" Pilot Drill Bit Easy to use The product is manufactured in China Used for Hole Saws 1-1/4-Inch to 6-Inch Hardened Carbon Steel Construction for Strength Split Point Pilot Drill for Faster Penetration and Less Walking