HLOFIZI 4mm Cobalt M35 Drill Bits (5 Pack), Metric Black and Gold Coated

Product Details

• 4mm M35 cobalt drill bits, 5-piece. Ideal for drilling hard metal, stainless steel,copper and aluminum
• UP to 3X Longer Life: Made of M35 cobalt high speed steel, provide extreme durability and resisting breakage. Black and gold coating for high-heat resistant and rust protection
• Efficiently and Clean: Fully ground technology for PRECEISION and FAST drilling clean, burr-free holes
• Prevent Walking: 135 Degrees split point for precision start NO WALKING, and stays sharper longer than your standard drill bit
• Optimized Flute Design: Fast chip removal. Comes with straight shank. Size markings on the shank for identifying sizes quickly