From complex infrastructure projects to do-it-yourself ventures, Simpson Strong-Tie offers a wide variety of anchoring products to meet virtually any need. Our mechanical anchors are designed to install easily and securely into a variety of base materials, including concrete and brick to hollow and grouted CMU. They offer optimal performance even in the most demanding structural applications. Sleeve-All expanding anchors are pre-assembled, expanding sleeve anchors for use in all types of solid base materials. These anchors are available in acorn, hex, rod coupler and flat head styles for a wide range of applications. Sleeve-All® 3/8 in. x 1-7/8 in. Rod-Coupler Head Sleeve Anchor (50-Qty) (Pack of 200).