Hillman Hammer Drive Anchor 5/16 " X 2 " Zinc Plated Steel Strike Anchors are designed for concrete applications only. For installation, anchor is inserted into pilot hole, nail is struck and expands the anchor, locking it in place. These anchors are removable with a claw hammer. *; ; Brand Name: Hillman Diameter: 5/16 in. Length: 2 in. Material: Steel Head Style: Round Head Product Type: Strike Anchor Number in Package: 50 pk Screw Included: Yes Packaging Type: Boxed Thread Type: High/Low Required Drill Hole Size: 5/16 in. Screw Length: 2 in. Minimum Embedment: 1-1/2 in. Capacity: 125 lb Application: Concrete Features Resists vibration Preloads itself Reduces the need for templated Zinc plated steel Boxed USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.