Drill Bit Makita D-77855 1 pc

The Makita D-77855 drill bit is designed to deliver durable and accurate drilling performance across a range of common materials. Manufactured to meet professional standards, the bit combines material strength and a geometry intended to maintain sharpness and provide consistent hole quality. Its construction focuses on long life and repeatable results for both occasional and frequent use in workshop and site environments.

Advantages

The drill bit offers wear resistance and stable cutting action, which helps reduce the need for frequent replacements. Its tip and flute geometry enhance chip evacuation and reduce walking at the start of a hole, improving drilling precision. The bit’s balance of hardness and toughness provides a practical compromise between edge retention and resistance to breakage under normal working loads.

Suitable for

• Drilling through common construction materials
• General workshop and maintenance tasks
• Retrofit and installation work requiring reliable hole quality
• DIY projects and light professional use

Key specifications

• Design: single-piece drill bit with optimized tip geometry for accurate starts
• Material: high-quality tool steel for enhanced durability
• Finish: surface treatment to improve wear resistance and reduce friction
• Flute: efficient chip removal profile
• Intended use: manual or machine drilling with compatible chucks

How to use

Select a drill speed and feed appropriate for the work material and the bit diameter. Secure the workpiece and clamp as needed to prevent movement. Fit the bit into a compatible chuck and ensure it is properly tightened. Start drilling at low speed to establish the hole, then increase speed as required. Apply steady pressure without forcing the bit; allow the cutting edges to do the work. Withdraw periodically for cooling and chip clearing when drilling deep holes.

Usage recommendations

Use personal protective equipment such as safety glasses and gloves. Match drilling speed and lubrication to the material to extend bit life. Replace the bit when wear degrades hole quality or when chipping at the tip is evident.