FLZOSPER Step Drill Bit，HSS 5PCS Titanium Step Drill Bit Set with Automatic Center Punch - Short Length, Double Cutting Blades, High-Speed Steel - Covering 50 Sizes, Complete with Aluminum Case

Size: ▶1/4" to 1-3/8" (10 Steps): 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8" ▶3/16" to 7/8" (12 Steps): 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8" ▶1/4" to 3/4" (9 Steps): 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4" ▶1/8" to 1/2" (13 Steps): 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" ▶3/16" to 1/2" (6 Steps): 3/16", 1/4", 5/16", 3/8", 7/16", 1/2" How to use drill bit ? Keep perpendicular to the material and select the corresponding size for operation. The operation is simple and convenient. Pay attention to safety when using. Don't hurt yourself. Water cooling while working can effectively prolong the service life of the drill bit.

• ▶【SUPERIOR QUALITY】-Cobalt high speed steel drill bits along with the titanium coating ensures extreme durability, will stay new and shiny for years to come.
• ▶【VARIOUS SIZES】-Different sized shanks ensure compatibility with 1/4, 3/8 and 1/2 in. chuck sizes. You are capable to drill holes in different sizes which can meet your normal needs.
• ▶【PRECISION DESIGN】-The split point tip, set at a 118-degree angle, significantly enhances wear resistance, making the drill bits long-lasting and efficient. The innovative two-flute design facilitates smoother cutting and enables easy evacuation of material particles, promoting cleaner and more precise drilling operations.
• ▶【ORGANIZED STORAGE】-Comes complete with a purpose-designed holder featuring a size index. This inclusion ensures effortless organization and storage, preventing the bits from falling out and keeping your workspace tidy.
• ▶【WIDELY APPLICATION】-Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper, iron and many other types of sheet metal (excluding steel or any other harder metal).