SDS+ masonry drill bit MEGA 18 mm (model 81821)

The SDS+ masonry drill bit MEGA 18 mm (model 81821) is designed for efficient drilling in concrete, brick and other mineral materials. With an 18 mm diameter and an SDS+ shank, this hammer-drill accessory provides fast engagement in compatible rotary hammers and stable retention under impact drilling conditions. It is intended for creating installation holes for anchors, conduits and through-holes in construction and renovation tasks.

Advantages

The carbide tip and flute design deliver consistent drilling performance and good removal of dust and debris from the hole, reducing jamming during use. The SDS+ shank enables quick insertion and secure locking in rotary hammers with SDS+ chucks, allowing fast bit changes and stable operation under heavy load. The bit's 18 mm diameter is suitable for common anchor and sleeve sizes used in structural and finishing work.

Suitable for

• Drilling holes in concrete and reinforced concrete for anchor installation
• Masonry work in brick, block and stone
• Creating through-holes for electrical conduits and plumbing
• Renovation and light structural fastening tasks

Key specifications

• Diameter: 18 mm
• Shank type: SDS+
• Material tip: carbide (tungsten carbide head)
• Intended material: concrete, masonry, stone and similar mineral substrates
• Use type: impact (hammer) drilling with rotary hammer

How to use

Install the SDS+ shank into a compatible rotary hammer chuck until it locks. Select appropriate rotation and hammer settings on the tool according to the base material. Start drilling at low speed to establish position, then increase speed and apply steady axial pressure while allowing the tool to do the work. Withdraw the bit periodically to clear dust from the hole and prevent overheating. For through-holes, monitor depth and keep the drill perpendicular to the surface for accurate, clean holes.

Usage recommendations

Use appropriate personal protective equipment including eye, ear and respiratory protection. Choose drill speed and hammer force that match the material hardness; excessive force may reduce bit life. Clean and inspect the bit after use and replace if the carbide tip shows significant wear or chipping to maintain drilling quality and safety.