1/4" Simpson Titen concrete screw anchors are a fast and reliable option for may concrete applications. Simply drill a 1/4" hole about an inch below intended penetration and drive in with a c
ordless impact wrench. Available in lengths from 1-7/8" up to 4". Try them in place of Tapcon or 1/4" wedge anchors. Being removable, they are perfect for temporary installations.