Porasarja KWB 039800 8 kpl oikeakätinen

The KWB 039800 drill bit set includes 8 masonry drill bits made to ISO 5468 with tungsten carbide tips. Each bit is high-temperature brazed and features a smoothly formed half‑round spiral for efficient removal of waste material. The bits have shot‑blasted grey surfaces and are impact resistant for use in both rotary and impact drills; suitable for drilling into masonry, natural and artificial stone, and limestone.

Advantages

Precision‑ground tungsten carbide tips provide long life and reliable penetration in hard materials. High‑temperature brazing secures the tip to the shank for improved durability. The half‑round spiral flute is formed smoothly to optimise dust and debris extraction during drilling. Shot‑blasted surfaces reduce slippage in chucks and improve handling. Designed to resist impact, these bits are compatible with both rotary and hammer drilling modes.

Suitable for

Key specifications

How to use

Select a drill bit size appropriate for the hole required and secure it in the drill chuck with the drill set for right‑hand rotation. For masonry and stone, use the hammer/impact mode when recommended by the drill manufacturer; for delicate materials switch to rotary mode. Apply steady pressure without forcing the bit, start drilling at low speed to establish the hole, then increase speed as needed. Periodically withdraw the bit to clear dust and allow cooling; avoid overheating the carbide tip.

Recommendations

Use appropriate personal protective equipment (safety glasses, dust mask, ear protection) and a suitable drill rated for masonry. Match the bit size to anchors or fittings, and replace worn bits to maintain drilling performance.