Hillman 370210 Short Lag Shield, 3/8", 50-PackHillman Lag Shield provides secure anchorage of lag screws in concrete and the mortar joints of block and brick. Four way expansion insures a tight grip and prevents over expansion. No lubrication is required. Size: 3 8" Drill Size: 5 8" Min. Embedment: 1 3 4" Type: Expansion shield anchor Base Material: Brick, concrete, hollow block Holds Up to (4000 psi Concrete): 300 lbs Holds Up to (C 90 Block): 160 lbs Holds Up to (Brick): 240 lbs 50 per pack.