Bosch Professional CYL-5 Concrete Drill Bit 4 x 50 x 90 mm

This 1-piece concrete and masonry drill bit, the Bosch Professional CYL-5, is designed strictly for hard structural materials. Its solid carbide tip provides the cutting edge needed for sustained use on tough, dense surfaces. The bit is rated for concrete rather than for general-purpose woodworking or metalworking. Its primary function is to prepare wall surfaces for the secure installation of heavy mounting hardware, producing precise entry points for a range of commercial and domestic structural fixtures.

Engineered for fixing work, the bit bores clean, uniform holes. Operators can reach the required fixing depth without having to push hard against the back of the drill. Material is removed continuously, so the bit does not need frequent repositioning. By producing a consistent hole size, the bit ensures a tight fit for wall anchors. This predictability is useful for both tradespeople and DIY users who regularly mount hardware into solid masonry.

• 4 mm drill bit diameter, suitable for small wall plugs and masonry screws.
• 90 mm overall length, providing the reach needed for standard wall installations.
• 50 mm working length, setting the maximum cutting depth per pass.
• Cylindrical shank, which fits standard rotary chucks.
• For use with standard drills only, as a direct rotary attachment.