Drill bit GRAPHITE SDS+ 7 mm for concrete, model 57H411

GRAPHITE SDS+ drill bit 7 mm (model 57H411) is designed for drilling precise holes in concrete and masonry with rotary hammers that accept SDS+ shanks. The 7 mm diameter is suitable for creating through-holes, mounting anchors and dowels, and other common installation tasks. The SDS+ connection enables secure, fast bit changes and efficient hammer action transfer for consistent drilling performance in demanding materials.

Advantages

The SDS+ shank provides stable coupling with compatible rotary hammers, reducing slippage and allowing full use of the tool's percussion force. The 7 mm diameter balances speed and control for drilling small to medium holes while maintaining straightness and bit life when used in concrete and masonry. The bit is suitable for both professional and DIY applications where reliable hammer-drilling performance is required.

Suitable for

• Drilling through-holes in concrete and blockwork for anchor bolts and dowels
• Preparing openings for electrical boxes and conduit fastening
• Installing fixtures that require 7 mm holes in masonry
• General construction and renovation tasks involving hammer drilling

Key specifications

• Diameter: 7 mm
• Shank type: SDS+
• Intended materials: concrete, masonry
• Typical use: hammer drilling with rotary hammer

How to use

Fit the GRAPHITE SDS+ 7 mm drill bit into the SDS+ chuck of a compatible rotary hammer until it locks. Select hammer-drill mode on the tool and position the bit tip at the marked drilling point. Apply steady forward pressure without forcing the bit; allow the tool's percussion action to break material. Withdraw periodically to clear debris and avoid overheating. For deeper holes, remove accumulated dust with a blower or brush before continuing. After finishing, retract the bit and unlock it from the chuck.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses, gloves and hearing protection. Choose drill speeds and feed pressure suitable for concrete to prolong bit life. For reinforced concrete, proceed cautiously and consider a carbide-tipped bit if frequent rebar contact is expected.