The Fischer UltraCut FBS II US Concrete Screws deliver premium installation performance engineered for concrete and masonry applications. The 10 x 90mm screws feature specialised saw tooth geometry, enabling rapid and secure cutting into concrete substrates. Designed for professional versatility, these screws accommodate up to three embedment depths, allowing a single screw size to suit varying component thicknesses. The approved adjustment capability permits unscrewing and realignment up to twice without compromising installation integrity. No drill hole cleaning is required for ceiling or floor installations, streamlining the installation process for temporary anchoring applications. This 50-piece pack is ETA compliant for masonry applications, ensuring reliable performance across demanding environments. Features & Benefits: Ideal for securing railings, protection barriers, cantilevers, formwork bracings, and temporary anchoring applications. Special saw tooth geometry enables fast, secure cutting into concrete substrates. Accommodates up to 3 embedment depths for varying component thicknesses. Adjustment capability allows unscrewing and realignment up to twice without compromising integrity. ETA compliant for masonry applications delivering high security across various substrates. No drill hole cleaning required for ceiling or floor installations. Recommended for use with tangential impact driver and compatible socket or special TX bit. Size: 10 x 90mm. Pack Quantity: 50.