Hanson 1765542 1/4-20 - 1/2-13 Pts SAE Set for Tap Die Extraction, 12 Piece Tap and die set includes: Fractional: 1/4" - 20 NC, 5/16" - 18 NC, 3/8" - 16 NC and 1/2" - 13 NC Also includes 1" die stock, die spacer, small and medium adjustable tap sockets and a T-bar Handles allow more comfort and control when threading