Disston Company 691204 Masonry Drill Bit 1/4 X 4 in

Product Description

The DISSTON COMPANY 691204 is a carbide-tipped, rotary percussion masonry drill bit designed for use in standard drills operating in rotary or hammer mode. The bit measures 1/4 inch in diameter and 4 inches in length, with a black oxide finish that helps resist corrosion and reduce friction during drilling. It is built for tradespeople and skilled DIYers who need a reliable bit for penetrating common masonry materials. The carbide tip provides durability when driving through hard substrates that would quickly wear down standard high-speed steel bits.

This bit is recommended for drilling cinder block, common brick, hard brick, plaster, ceramic tile, glazed tile, wet or dry concrete, and moderate-duty applications in marble, granite, and concrete rated over 6000 psi. It fits into the standard rotary and hammer-drill workflows used by masonry contractors, tile setters, and general construction tradespeople. Its carded packaging makes it easy to identify and store on a job site tool board or in a parts bin.

Key Features

• Carbide-tipped cutting edge for extended wear life in masonry applications
• Black oxide finish reduces friction and provides basic corrosion resistance
• Compatible with drills operating in rotary or hammer mode
• Recommended for cinder block, brick, plaster, ceramic tile, glazed tile, and wet or dry concrete
• Suitable for moderate use in marble, granite, and high-strength concrete over 6000 psi
• Carded packaging for easy storage and identification

Compatibility

Designed for use in standard rotary and hammer-mode drills. Recommended for drilling cinder block, common brick, hard brick, plaster, ceramic tile, glazed tile, wet or dry concrete, and for moderate use in marble, granite, and concrete over 6000 psi.

Installation Notes

Installation of this bit should be performed by a qualified tradesperson familiar with masonry drilling procedures. Always power down or unplug the drill before inserting or removing the bit, and confirm the chuck is fully tightened before operation. Use appropriate eye protection and dust control measures when drilling masonry, as silica-containing dust presents a respiratory hazard. Consult applicable OSHA silica exposure guidelines when drilling concrete or masonry in an occupational setting.