GRAPHITE drill bit set for concrete, cylindrical shank, sizes 4, 5, 6, 8, 10 mm (57H350)

Set of GRAPHITE drill bits for concrete with cylindrical shanks in five metric sizes: 4, 5, 6, 8 and 10 mm. These bits are made for drilling into concrete and masonry using rotary or hammer drills that accept cylindrical shanks. The set is intended for creating holes for anchors, dowels and through-holes during construction, renovation and DIY tasks. The design focuses on efficient material removal and straightforward compatibility with common drill chucks that do not require SDS-type adapter connection.

Advantages

The set includes a range of commonly used diameters, reducing the need to purchase individual bits separately. Cylindrical shanks provide simple and reliable mounting in standard three-jaw chucks. The geometry of the cutting heads is optimized for concrete and masonry to deliver stable drilling progress and minimized wandering at the start of the hole. The assortment covers both small-diameter fixing tasks and larger holes for anchors or feeds, offering versatility for building and repair jobs.

Suitable for

• Drilling holes for wall anchors and plastic or metal dowels in concrete and brick
• Making through-holes for cable routing and conduit installation
• General renovation and repair work where rotary or hammer drilling is required
• DIY projects that require drilling into masonry with a standard chuck drill

Key specifications

• Material suitability: concrete and masonry
• Shank type: cylindrical (smooth) compatible with standard chucks
• Available diameters: 4 mm, 5 mm, 6 mm, 8 mm, 10 mm
• Intended drill types: rotary drills and hammer drills that accept cylindrical shanks
• Typical applications: anchor and dowel installation, through-holes

How to use

Select the drill bit diameter that matches the anchor or dowel size specified for your task. Secure the bit in the drill's chuck, ensuring it is straight and tightened. For hammer-capable drills, use hammer action when drilling into concrete or brick; for light masonry or delicate locations, start with rotary mode to avoid excessive impact. Apply steady pressure, keep the drill perpendicular to the surface, and periodically withdraw the bit to clear dust and debris for more efficient drilling. Wear eye and respiratory protection and follow the drill manufacturer's safety instructions.

Usage recommendations

For best results, match the bit diameter to the recommended hole size for anchors and dowels, use appropriate drill speed and hammer action for the material, and clear dust frequently to prevent clogging. Replace bits showing excessive wear or damage to maintain hole accuracy and drilling safety.