Rawplug 07162 Vertigo Rod Hanger, ASTM B633, Zinc Plated, 3/8 inch Rod diameter, Thread: 5/16 inch diameter X 2-1/2 inch Length, Tensile Strength: 1450 pounds Ultimate Load For Fir Widthood, Type 17 Point Style, 1/8 inch Pre-Drill diameter, Vertical Mount, 2-1/2 inch Embedment Depth, UL Listed, FM Approved, For Widthood