DAIEN Double-Head Twist Drill Bit Stainless Steel High-Speed Metal Drilling and Reaming Double-Edged Drill Set 4.0mm*10

Smooth surface finish to reduce friction and prevent rust

Drill tip angle optimized at 135° for easy positioning and high-speed operation

Suitable for drilling stainless steel, aluminum alloy, wood, plastic, copper, iron, and mold steel

Not recommended for use on heat-treated materials

Total Length / Cutting Length / Diameter

46.8 / 10 / 3.2

48.9 / 15 / 3.2

51.7 / 14 / 3.5

54.9 / 16 / 4.0

54.3 / 16 / 4.2

55.2 / 16 / 4.5

56.1 / 16 / 5.2

56.8 / 16 / 5.2

58.0 / 16 / 5.5

66.0 / 16 / 6.0

Ensure the drill chuck tightly clamps the double-ended drill bit; keep the exposed part as short as possible

Drill tip should not be overly sharp to avoid breakage

For holes larger than 6mm, pre-drill with smaller bits (3.2-4mm) before using larger drill bits

Product dimensions are manually measured; slight deviations may occur. Please refer to the actual product.

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