Hss M35 Cobalt Steel Step Cone Drill Bit Hole Saw Cutter 4-12/20/32Mm 5-21/27Mm – M35 Co 4-12mm

This product is a high-hardness cobalt step drill bit designed for drilling in tough materials such as stainless steel and hardened steel. It offers multiple size ranges for versatile drilling applications, making it suitable for both professional and DIY use.

• 4-12 mm size range, including 4, 5, 6, 7, 8, 9, 10, 11, 12 mm
• 4-20 mm size range, including 4, 6, 8, 10, 12, 14, 16, 18, 20 mm
• 5-21 mm size range, including 5, 7, 9, 11, 13, 15, 17, 19, 21 mm
• 5-27 mm size range, including 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27 mm
• 4-32 mm size range, including 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32 mm

The drill bit is suitable for use with hand drills and bench drills. For thinner materials within 1 mm, a hand drill is recommended, while for thicker materials around 2-3 mm, a bench drill is preferable. Drilling should be performed at moderate speeds, around hundreds of RPM, to prevent damage. Cooling with water or cutting fluid during operation can help extend the lifespan of the drill bit.

• Material: M35 cobalt steel (HSS Co)
• Size options: 4-12 mm, 4-20 mm, 5-21 mm, 5-27 mm, 4-32 mm

Package Content:

• Multiple step drill bits in various size ranges as specified