Chenango Supply 1/4 x 1-3/4" Flat Head Concrete Screw Anchor. 100 pieces With Drill Bit (1/4 x 1-3/4)</br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/41ur9EPgl%2BL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/51nPSqPoDxL.jpg' noproxy></br>