Drill size: 5/16", Min. embedment: 1-1/2". Base material: Brick, concrete, drywall, hollow block, plaster. 12-14-16 x 1-1/2" Drill size: 5/16" Min. Embedment: 1-1/2" Ribbed plastic anchors with screw Base material: Brick, concrete, drywall, hollow block, plaster Holds Up to (1/2" Drywall): 10 lbs Holds Up to (4000 psi