The ultimate Self Drilling Woodworking screws with almost 35 years of unsurpassed performance and long term reliability. Available in (14) sizes of Interior Self Drilling Carpentry screws that will meet the needs of most any interior woodworking project, whether it is made of hardwoods, softwoods, particle board and/or Melamine fabrication. Self drilling in any density or aged materials without breakage, right down to a smooth flush.. See full description for further details