Durable & Sturdy Material: High-speed steel and titanium coating ensure excellent drilling durability and sharpness, which can reduce friction and lower operating temperature. Great for metal, wood, and plastic panels, easy to countersink. Suitable for home DIY and general construction/engineering use

Double Slot & Triple Shank: The split point tip is 118 degrees to increase wear resistance. The dual-fluted design provides faster, smoother, accurate cuts and keeps metal shavings from flying around for added safety; the triple-flat shank fits securely into the power tool chuck, eliminating slippage

Automatic Center Punch: Delivers an automatic, high-impact, spring-loaded strike when pressed against a surface, adjustable cap regulates striking force

Sturdy & Stackable Case: Store in a sturdy plastic box with a transparent lid, you can find the drill at a glance. The storage box is designed to be stacked and can be stacked and combined with other boxes at will, making it easy to carry and store

Step Drill with Multiple Drill Sizes: 5PCS-50 Sizes - Drill #1 (6 Steps): 3/16"-1/2"; Drill #2 (9 Steps): 1/4"-3/4 ". Drill #3 (13 steps): 1/8"- 1/2". Bit #4 (Grade 12): 3/16"- 7/8". Drill #5 (10 steps): 1/4" - 1-3/8"