Baolian Woodworking Spiral Drill Bit Set for Wood Door Lock Installation and Drilling Tool Kit

Drill Diameter Range

10 mm to 35 mm

Total Length

165 mm

Cutting Edge Length

65 mm

Shank Diameter

6.35 mm hexagonal

Softwood and hardwood (e.g., ash, beech, pine, elm, birch, sandalwood)

Plastics, rubber, polyurethane

Not suitable for bamboo or bamboo boards (may cause cracking)

Not suitable for metal drilling

For hardwoods with high density and deep holes (e.g., birch, beech, sandalwood), use a high-power drill (≥800W) or 48V lithium battery drill for effective drilling

Avoid excessive drill speed to prevent tip overheating and damage

After use, clean and apply anti-rust oil for storage to prolong tool life

Drill bits may dull over time; sharpen with a file before reuse

Keep out of reach of children due to sharp tips

Drill bits with or without extension rods (150mm or 330mm)

Extension rods feature hexagonal anti-slip shank and double-threaded secure connection

Precision deep hole drilling in various woods and non-metal materials

Suitable for woodworking, plastic fabrication, rubber and polyurethane processing

Manual measurements may have slight deviations; actual product dimensions prevail

Refer to the recommended speed chart for optimal drilling performance