VERSATILE 3PCS SET – Includes three step drill bits with varying sizes: #1 (1/4" – 5/16" – 3/8" – 7/16" – 1/2"), #2 (1/4" – 9/32" – 5/16" – 11/32" – 3/8" – 13/32" – 7/16" – 15/32" – 1/2"), and #3 (5/16" – 3/8" – 7/16" – 1/2" – 9/16" – 5/8" – 11/16" – 3/4" – 13/16"- 7/8"). These metal drill bits come in a box so they can be storage well
PREMIUM M35 HSS – Constructed from M35 high speed steel with 5% cobalt content, these step drill bits offer exceptional durability and superior cutting performance, even on tough materials like stainless steel (<1mm)
ADVANCED TIALN COATING – The Titanium Aluminium Nitride (TiAlN) coating ensures high hardness and excellent wear resistance, extending the lifespan of the drill bits and maintaining sharpness for longer periods
118°X TYPE OPENINGS DESIGN – Designed with a spiral flute for smooth, clean drilling and enhanced chip removal. Achieve precise holes effortlessly, reducing the need for multiple drill bits
IDEAL FOR DIY & PROFESSIONAL USE – Whether you’re a DIY enthusiast or a professional, this step drill bit set is perfect for various applications, including drilling in sheet metal, aluminium, copper, wood, plastic, and more. Not only can it enlarge holes, but it also deburrs, chamfers, and cutting
COMPATIBLE WITH VARIOUS DRILLS – 1/4"(6.35mm) Hex shank design eliminate slipping in drill chuck, these step drill bits are compatible with a range of drilling tools including bench drills press, impact drills, and hand drills, making them a versatile addition to your toolkit
KIND TIPS – To prevent overheating and potential damage to the drill bits, always use cutting oil or spraying water during operation. Proper cooling extends the life and efficiency of the bits