50pc 1/4x1-1/2 hammerset. 1-piece drive anchor. Eliminates hole spotting, just drill proper hole and drive in. No need for exact hole depth. Use in all masonry. Steel/steel drive. Large clamshell packaging. Anchor Diameter: 1/4", Anchor Length: 1-1/2", Package Type: Clamshell No. 35305: Anchor Diameter: 1/4", Anchor Length: 2", Package Type: Clamshell