KEO 55702 Solid Carbide Single-End Countersink， Uncoated (Bright) Finish， Single Flute， 60 Degree Point Angle， Round Shank， 1/4" Shank Diameter， 1/4" Body Diameter</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/310bSVMw-gL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31bEx4kk3FL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41KjUmjfYEL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31vak-V1XBL.jpg' noproxy></br>