Set of five high speed steel with titanium coating step drill bits for drilling holes in surfaces such as plastic, aluminum, copper, stainless steel, and other types of sheet metal. This Non-walking drill tip design ensures your safety, and a faster and smoother cutting speed while working. The kit includes an automatic center punch that helps you mark the center point that you want to drill, with exquisite aluminum case protects the drill bits from dulling and prolongs the drills lifespan. It is a great tool for electrician, plumber, and handyman.

Features:

• Made of premium quality high speed steel with titanium coating
• Automatic center punch delivers a high-impact and spring-loaded strike
• Coated by titanium, performs well in heat, corrosion and rust resistance
• Equipped with aluminum case, convenient to store and carry around
• For drilling holes in plastic, aluminum, copper, wood and other types of material

Specifications:

• Model: 5PC-STP
• Made of HSS Steel
• Titanium coating
• Split point: X-shape with 135 degree
• Set weight: 19.5oz or 553g

Drill bit sizes:

• No. 1 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") 
• No. 2 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")
• No. 3 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")
• No. 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'')
• No. 5 3/16" to 1/2" 6 Steps (3/16'', 1/4'', 5/16", 3/8'', 7/16'', 1/2'')

Please note:

• To prolong the lifespan of the bits it’s suggested to drill with oil in order to keep the temperature under control while drilling into hard surface like steel

Package Includes:

• 5pcs step drill bits
• Automatic punch tool
• Aluminum storage case