Concrete Screws With Drill Bit:You can get 35Pcs concrete screws, included 1 drill bits are a nice addition,1/4 x 2-3/4 Hex head phillips concrete screws,Meets most of your needs. Well-Made Features:Cement screws for concrete is made up of top-notch 1022A hardness carbon steel,treated at high temperatures and blue ruspert plated can withstand hydrochloric acid corrosion for 1000 hours Easy to Use:Self tapping concrete screws with diamond point make faster penetrated,Taps threads directly into masonry and requires no other anchor,unique High-Low thread design can fast grip and attach the materials,The included drill bit saves time and cost,Just drilling a pilot and insert screw and easy fasten. Widely Applications:Concrete screws are ideal for use in concrete, masonry, mortar Walls,cement, blocks, and bricks cinderblock,stucco materials, such as secured and anchoring shelf, metal art,hooks,electrical box,solar lights,foam board,grab bars,conduit, cameras, antennas and brackets Perfect Around The House: These masonry screws do work great in your basement,garage,yard,outdoor patio,and exterior of the house.Save yourself the hassle of running to the hardware store,they are well package in a solid box with clear lables,please connect us if problem,we will help you. Well-Made Features:Cement screws for concrete is made up of top-notch 1022A hardness carbon steel,treated at high temperatures and blue ruspert plated can withstand hydrochloric acid corrosion for 1000 hours