Hillman Lok/Bolt Sleeve Anchor 3/4 " Hex Head 1-1/2 " Zinc Plated Steel Concrete Sleeve Anchors' design allows them to anchor into concrete, brick and block. Turning the nut pulls the working end of the sleeve anchor up through the sleeve, expanding and anchoring itself securely in the base material. Sleeve anchors have many uses including, but not limited to frame installations, electrical and mechanical attachments, and masonry applications. *; ; Brand Name: Hillman Diameter: 3/4 in. Length: 4-1/4 in. Material: Steel Head Style: Hex Head Product Type: Sleeve Anchors Number in Package: 5 pk Screw Included: Yes Packaging Type: Boxed Thread Type: High/Low Required Drill Hole Size: 3/4 in. Screw Length: 4-1/4 in. Minimum Embedment: 3-3/8 in. Capacity: 2160 lb Application: Brick, Concrete, Hollow Block 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.