Masonry Drill Bit 6mm 8mm 10mm 12mm ,Multipurpose Drill Bit，High-strength hard alloy Drill Bit Set for Drilling in Tile, Glass, Concrete, Brick, Wood, and Plastic

High-quality alloy cutter head/U-groove drill body/non-slip triangle shank

package included：

6mm Drill Bit：2pcs

Drill shank diameter: 5mm

Drill diameter: 6mm

Total length of drill bit: 100mm

8mm Drill Bit：2pcs

Drill shank diameter: 7mm

Drill diameter: 8mm

Total length of drill bit: 110mm

10mm Drill Bit：2pcs

Drill shank diameter: 8mm

Drill diameter: 10mm

Total length of drill bit: 120mm

12mm Drill Bit：2pcs

Drill shank diameter: 9mm

Drill diameter: 12mm

Total length of drill bit: 125mm

Material: Cemented carbide

Precautions for use

01. This drill bit can be installed on various machines such as ordinary hand drills, impact drills, rechargeable drills, etc.

02. Water must be added for cooling when drilling, and the strength should be light and very gentle, especially at the beginning of the drilling and

When about to drill through, it should be slow and even

03. After use, please wipe clean the surface stains of the product and apply anti-rust oil to prevent rust.

04. It is not recommended to use lithium electric drills below 24V, and the force is too small to drive

05. Drilling with high hardness materials needs to add water to cool down, otherwise the drill bit will be burnt

06. The steel bar cannot be hit during use, which will cause the edge to collapse"

1: Stabilize the chassis, use even force, electric drill

2: The hand electric drill drills the twist drill and the stainless steel plate into a vertical 90°

3: The electric drill chuck must be tightened with the twist drill, the shorter the twist drill, the better, the knife of the twist drill does not need to be too sharp, too sharp

4: If the hole is greater than 6mm, first use 3.2mm-4mm to make a small hole, and then use a big drill to make a hole

5: The speed of the electric drill should be between 80-120 for the best effect, the faster the speed / the angle is not suitable /

Or the hardness of the processed material is too high, causing red heat at the cutting position and work of the drill

High temperature causes adhesion, so a warm reminder, the higher the speed, the better