[PACK CONTENT]: This package includes 40 pieces of 1/4" x 1-1/4" slotted hex head concrete screws, ensuring you have enough quantity for various installation needs in residential or commercial settings. [ MATERIAL]: Crafted from premium carbon steel and hardened through a high-temperature process, these concrete screws feature a blue rust- finish, offering enhanced durability and superior resistance for long-lasting use. [VERSATILE APPLICATION]: Perfect for securely fastening items to concrete, masonry, or mortar walls, these screws are an essential tool for construction projects in homes, offices, or outdoor yard environments, providing reliable and robust anchorage. [ADVANCED DESIGN FEATURES]: Each screw boasts a distinctive diamond finish that not only enhances the aesthetic appeal but also simplifies maintenance and repair tasks, making them a practical choice for professional and DIY projects alike. [SPECIFIC DIMENSIONS]: The screws have a thread size of 0.25" (6.3mm), a flange diameter of 0.41" (10.4mm), and a head diameter of 5/16" (8mm). The length, excluding the head, measures 1.25" (31.8mm). Use a 3/16" carbide tip drill bit for creating hole. Color: Blue Material: Metal Package Contents: 40 pieces of 1/4" x 1-1/4" slotted hex head concrete screws 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.