amoolo Titanium Step Drill Bit Set (5Pcs), Total 50 Sizes HSS Unibit with Double Cutting Blades for Metal, Wood, Plastic, Multiple Hole Drilling Cone Bit Set with Free Automatic Center Punch

TITANIUM | HIGH SPEED STEEL - Industrial grade high speed steel ensures excellent durability and strong wear-resistance. The titanium coating reduces friction and cools faster, giving longer using life. Prefect for Soft Metal Sheet/Wood/Plastic/Aluminum Sheet/Copper and other metal sheets. Suitable for Home DIY, General Building and Engineering Use.
DOUBLE-FLUTE DESIGN - Double cutting blades design guarantees a faster and smoother cutting, allows particles escape easily.
118° X-TYPE SPLIT POINT - Requires less pressure with self-centering and prevents walking.
1/4" HEX-SHANK QUICK CHANGE - Fits into most pistol drill and drill press securely without slippage when drilling new holes or enlarging existing holes.
STEP BITS WITH MULTIPLE DRILL SIZES：5PCS-50sizes - Bit #1 (6 Steps): 3/16"-1/2"; Bit #2 (9 Steps): 1/4"-3/4".Bit #3 (13 Steps): 1/8"- 1/2". Bit #4 (12 Steps):3/16"- 7/8". Bit #5 (10 Steps):1/4" - 1-3/8". No need of 50 seperate drill bits with only 5 pieces. Free to get a portable tin box to prevent rust.

Hello,