Hymnorq 10-Piece M35 Cobalt Steel Drill Bit Set for Metals, 5.2mm Diameter, Dual Twist Flute with 135° Split Point, Bronze Hue Finish, in Durable Transparent PP Case

High-Performance Material: Made from M35 grade cobalt steel (5% cobalt) for exceptional durability, heat resistance, and performance on tough materials like stainless steel and cast iron. Precision Design: Fully ground with a 135° split point tip for fast starts, reduced walking, and clean, accurate drilling results. Efficient Chip Removal: Dual twist flute ensures smooth chip clearance, enhancing drilling efficiency and reducing friction. Versatile Specifications: Metric size 5.2mm diameter with a 52mm flute length and 86mm total length, featuring a chamfered and straight shank for easy handling. Durable Metal Case: Comes in a sturdy iron case with a vibrant red finish for secure storage, portability, and protection of your drill bits.