Professional concrete nails for commercial or occasional home use 4 inch concrete nails This listing is for a pack of 17 concrete / masonry nails Ideal for nailing into concrete and brick walls Designed for fixing to masonry and concrete blocks Can be used for hanging photo frames and other pictures Hardened carbon steel for maximum strength and durability Zinc plated for rust and corrosion resistance 35 degree sharp point for easy penetration Countersunk head for flush fit SPECIFICATIONS • Concrete nails • Total length of the nails 4 in • Suitable for block, stone, brick and concrete • Manufactured from steel • Zinc plated • Countersunk head • 35 degree sharp point • Pack size – 200 grams (approx 17 nails)