Plastic Anchor Kit #10-12 X 1'' with Masonry Bit & #10 X 1-1/4'' Screws. Anchors are intended for light duty anchor applications Ribs prevent the anchor from turning in the hole during installation The split in the anchor ensures expansion on two opposing sides Kit Includes: 100 Ribbed plastic anchors 100 #10 x 1-1/4'' Screws & One 1/4'' x 4'' Masonry Bit