Twist drill bit Irwin 10501994 — diameter 1.2 cm, 1 pc

Irwin 10501994 is a single twist drill bit with a diameter of 1.2 cm, designed for fast and reliable drilling in masonry and concrete when used with compatible hand drills and SDS-plus rotary hammers. Supplied as a single piece, this 1.2 cm bit features Speedhammer Plus technology with a patented single flute and an extra-short head that concentrates cutting forces, reduces clogging and improves dust evacuation. The bit is intended for creating round holes in brick, block, masonry, concrete and similar materials where standard twist bits with SDS-plus connection are required.

Advantages

The patented single-flute design increases dust removal capacity and lowers vibration, delivering faster progress compared with conventional bits. The extra-short head transfers the majority of cutting load to the tip, which improves durability and allows more efficient clearing of drilling debris directly into the flute. With an SDS-plus shank the bit ensures quick, secure fitting in compatible rotary hammers, reducing downtime during bit changes. The combination of these features supports consistent performance when drilling into dense masonry and concrete.

Suitable for

• Drilling holes in brick and block for anchors and fixings
• Creating openings in concrete for conduit, pipes or cable routing
• Masonry drilling for installation of sleeves, dowels and mechanical anchors

Key specifications

• Type: Twist drill bit with Speedhammer Plus single-flute geometry
• Drill diameter: 1.2 cm
• Overall length: 260 mm
• Shank type: SDS-plus
• Designed material compatibility: concrete, masonry, brick, block, granite
• Pack quantity: 1 piece

How to use

Insert the SDS-plus shank into a compatible rotary hammer or hammer drill and ensure the bit locks securely. Select the hammer or rotary mode appropriate for masonry and concrete, set the required drilling speed and apply steady axial pressure while keeping the drill perpendicular to the work surface. Withdraw the bit occasionally to clear accumulated dust when drilling deep holes. Replace the bit if you observe excessive wear, reduced cutting performance or irregular vibrations.

Usage recommendations

Use appropriate personal protective equipment including safety glasses, hearing protection and dust mask. For best results in reinforced concrete, use progressive drilling technique and remove debris frequently. Match the drill mode and speed to the material; avoid overheating the bit by applying consistent pressure rather than excessive force.