Titanium Step Drill Bit Set & Automatic Center Punch, High-Speed Steel, 6 PCS Hex Shank Pagoda, Totally 50 Sizes, Double Cutting Blades, Aluminum Case Included

[Specifications and Models]: The kit includes

• No.1 drill bit (10 step sizes): 1/4″, 3/8″, 1/2″, 5/8″, 3/4″, 7/8″, 1″, 1-1/8″, 1-1/4″, 1-3/8″;
• No. 2 drill bit (12-step sizes): 3/16″, 1/4″, 5/16″, 3/8″, 7/16″, 1/2″, 9/16″, 5/8″, 11/16″, 3/4″, 13/16″, 7/8;
• No.3 drill (9 step sizes): 1/4 “, 5/16″, 3/8″, 7/16″, 1/2″, 9/16″, 5/8″, 11/16″, 3/4”;
• No. 4 drill (13 step sizes): 1/8″, 5/32″, 3/16″, 7/32″, 1/4″, 9/32″, 5/16″, 11/32″, 3/8″, 13/32″, 7/16″, 15/32″, 1/2″;
• No. 5 drill (6 steps): 3/16″, 1/4″, 5/16″, 3/8″, 7/16″, 1/ 2″;
• Center punch*1.

[Material]: High-quality high-speed steel with titanium coating for proven performance and durability in drilling holes in plastic, aluminum, copper, stainless steel and many other types of sheet metal.

[Optimized Design]: 135split point and two groove design can increase the cutting speed by automatic centering, prevent movement, remove chips faster and make the particles escape easily. The tri-flat shank fits securely into the power tool chuck and eliminates slippage.

[Features]: Step drills can drill in multiple sizes. The shaft shape is hexagonal, so it can be used with impact drivers.

[Package]: The set includes a sturdy aluminum storage box for safe storage and portability.