Drill size: 3/16", Min. embedment: 7/8". Base material: brick, concrete, drywall, hollow block, plaster. 4-6-8 x 1" Drill size: 3/16" Min. Embedment: 7/8" Yellow ribbed plastic anchors with #6 x 1-1/4" phillips sheet metal screw Base material: Brick, concrete, drywall, hollow block, plaster Holds Up to (1/2" Drywall):