As the original concrete screw anchor that revolutionized the construction world, Tapcon brand concrete anchors deliver the ease of use, superior precision and the unparalleled performance that professionals demand. With a new star recess to eliminate bit slip, Tapcon drives with ease and the patented thread design allows for quick and successful installation no matter the type masonry substrate anchored into. Brand Name: Tapcon Length: 2-3/4 in. Drive Style: Star Head Type: Flat Head Product Type: Concrete Screws Number in Package: 150 pk Driver Bit Included: Yes Color: Blue Indoor or Outdoor: Indoor and Outdoor Diameter: 1/4 in. Finish: Climaseal Packaging Type: Bucket Thread Type: High/Low Material: Steel