High Hardness Four-edge Serrated Drill Bits

Overview:

Four-edge serrated design: Enhances drilling efficiency and precision.

High hardness: Suitable for drilling ceramic tiles, concrete, and glass.

Dry drilling capability: No need for water cooling, reducing mess and setup time.

Multiple size options: Available in various diameters from 3mm to 12mm.

Set options: Convenient multi-piece sets for different drilling needs.

Specifications:

Sizes: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm, 12mm.

Sets available: 3-piece (4/5/6 or 8/10/12), 4-piece (6/8/10/12), 5-piece (4/6/8/10/12 or 5/6/8/10/12), 6-piece (4/5/6/8/10/12), 7-piece (3/4/5/6/8/10/12).

Material: High hardness alloy (exact type not specified).

Packing List:

Single drill bit: drill bit*1

Sets: drill bits according to set configuration (e.g., 4/5/6 three-piece set: drill bits*3).