Concrete drill bit GRAPHITE 12 mm cylindrical shank model 57H346

GRAPHITE concrete drill bit 12 mm with a cylindrical shank, model 57H346, is designed for drilling into concrete, masonry and similar hard materials. The 12 mm diameter provides a standard hole size for anchors, dowels, fasteners and small pipe passages. The cylindrical shank is compatible with rotary drills and hammer drills that accept smooth shanks, allowing use in a range of construction and renovation tasks where precise 12 mm holes are required.

Advantages

The drill bit is purpose-built for hard substrates, offering a geometry suited to cutting and removing material from concrete and masonry. Its 12 mm diameter ensures consistency when installing anchors or passing small conduits. The cylindrical shank enables straightforward mounting in chucks that accept smooth shanks, simplifying tool setup for both rotary and hammer drilling modes. The GRAPHITE brand indicates a product intended for general professional and DIY use in building and installation tasks.

Suitable for

• Drilling 12 mm holes in concrete for anchors and dowels
• Masonry drilling for renovation and construction work
• Preparing openings for small-diameter pipes and conduits
• Fastener and fixture installation where precise 12 mm holes are required

Key specifications

• Diameter: 12 mm
• Shank type: cylindrical (smooth) shank
• Intended material: concrete and masonry
• Compatible drill types: rotary drills and hammer drills that accept cylindrical shanks

How to use

Select a drill with a chuck that accepts a cylindrical shank and secure the 12 mm GRAPHITE drill bit firmly. For best results in concrete and masonry, use a hammer drilling mode if available and apply steady pressure without forcing the bit. Begin at low speed to position the hole accurately, then increase speed while maintaining control. Periodically withdraw the bit to clear dust and chips, which helps preserve cutting performance and prevents overheating.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses, hearing protection and dust mask when drilling. Match drilling mode and feed pressure to the material: use hammer mode for concrete and firm masonry, and rotary mode for softer masonry if required. Replace the bit when wear reduces cutting efficiency to maintain hole precision.