Diamond Tip Precision - Our Self Tapping Concrete Screws with a sharp diamond point for seamless insertion. Perfect for quick, efficient drilling into tough materials without pre-drilling. Ideal for both professionals and DIY enthusiasts Corrosion Resistant - Engineered with a top-grade corrosion-resistant coating, our concrete screws pledge steadfast durability. Ready for any weather, your installations remain robust and unyielding season after season Flat Phillips Head Excellence - Ensures seamless fit with a countersunk design, preventing protrusion for a polished, smooth fixture finish. Perfect for a flush mount in concrete applications Superior Hold with Advanced Design - Our Heavy Duty concrete screws feature a Unique Super Strength Thread for a formidable grip that endures. Perfect for long-term projects indoors and out, ensuring stability you can trust Robust Anchoring Solution - Superior-grade concrete screws built for fastening into concrete, brick & block. Trust in high-quality securing for a wide range of applications. Colour:As Shown Material:Carbon Steel Package Contents: 100 * Screw nails 1 * bit 1 * lot head Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.