Yanran Multifunctional Serrated Twist Drill High-Speed Steel Saw Drill Combined Punch Slot Drilling Serrated Drill Bits [3mm] 5 Pieces

Made of ultra-hard alloy material with titanium coating for enhanced hardness and wear resistance

Surface treated by hardening, rolling, and titanium plating

High-speed steel (HSS-4341) material with titanium coating for durability and resistance to breakage

Efficient chip evacuation for faster drilling

Precise axis alignment and sharp cutting edges ensure clean holes without vibration

| Drill Diameter | Working Length | Shank Diameter | Total Length |

|----------------|----------------|----------------|--------------|

| 3 mm | 35 mm | 2.5 mm | 60 mm |

| 4 mm | 37 mm | 3.5 mm | 70 mm |

| 5 mm | 49 mm | 4.5 mm | 79 mm |

| 6 mm | 52 mm | 5.5 mm | 84 mm |

| 6.5 mm | 55 mm | 6 mm | 85 mm |

| 8 mm | 65 mm | 7 mm | 95 mm |

Dimensions may vary slightly due to production batch differences; actual measurements prevail.

| Diameter | RPM |

|----------|-------|

| 3 mm | 1400 |

| 4 mm | 1000 |

| 5 mm | 800 |

| 6 mm | 700 |

| 6.5 mm | 650 |

| 8 mm | 500 |

Suitable for thin wood boards, aluminum alloy, thin iron sheets, and plastic board slotting

Clean sawdust from drill bit with wire brush during sawing for smoother operation

After sawing, deburr edges with files and sandpaper; for mirror finish, use 5000-7000 grit sandpaper

Precision manufacturing ensures sharpness and durability

High-quality alloy and titanium coating extend tool life and performance

Designed for fast, accurate, and clean drilling and sawing operations

"TASTE, LIGHT LUXURY LIFE – Quality Comes from Details, Trustworthy with Care"