3/8 6pt Flank socket 8 3/8 6pt Flank socket 9 3/8 6pt Flank socket 10 3/8 6pt Flank socket 11 3/8 6pt Flank socket 12 3/8 6pt Flank socket 13 3/8 6pt Flank socket 14 3/8 6pt Flank socket 15 3/8 6pt Flank socket 16 3/8 6pt Flank socket 17