The LDT anchor is a high performance anchor that cuts its own threads into concrete. Anchor bodies are made of hardened carbon steel and zinc plated. * Easy 2-step installation, simply drill a pilot hole and drive * Installs in less than half the time of a wedge anchor * Use standard drill bit sizes * Easily removed * Bulk - 50 per box ITEM NO:19405230 UPC:662520-079869 VL:B UM:BX PART NO:LDT-3830 SCREW SIZE:3/8" x 3"