MAKITA B-57439 SDS-Plus HSS-TiN Metal Drill Bit 4.5 x 110 mm

Metal drill bit  MAKITA  B-57439  SDS-Plus HSS-TIN MD Bit size 4.5 x 110 mm

Specifications

- Makita B-57439 is a small, precise metal drill bit made from High Speed Steel

- HSS), offering high strength and resistance to high temperatures generated during metal drilling. A key highlight is the Titanium Nitride coating

- TiN), an ultra-hard special coating layer that significantly reduces friction and heat buildup, giving the drill bit a service life many times longer than uncoated HSS bits.                                                                                                                                                       Feature (Key Features)

High Durability with HSS-TiN: TiN coating dramatically increases surface hardness, providing excellent wear and heat resistance for extended service life and longer sharpness retention.

SDS-Plus Shank: Quick and convenient installation into rotary hammers, ensuring stable rotational power transmission.

135° Split Point Tip: The split point ground tip allows the bit to self-center immediately upon contacting the workpiece surface, reducing slipping and eliminating the need for a center punch.

Fast and Precise Drilling: Ideal for pilot hole drilling or precision drilling requiring high speed and accuracy.

 Application

The Makita B-57439 drill bit is used for drilling metal and other medium to high-hardness materials, compatible with SDS-Plus rotary hammers in Rotation Only mode only.

Suitable Materials:

Steel

Cast Iron

Non-ferrous metals such as aluminum and copper

Plastics and other hard materials

Limitation: Strictly do not use Impact/Hammer Mode with this drill bit, as it will cause immediate damage or breakage to the bit.