SNAP ON Tools DBTB121 Jobber Length THUNDERBIT High Speed Steel 21 bits ( MISSING 5/16", 2X 7/32" ONE NOT SNAP ON). (MISSING 5/16", THERE ARE 2X 7/32" ONE NOT SNAP ON) UP FOR GRABS! ALTHOUGH LISTED IN PRE-OWNED CONDITION, THIS SNAP ON TOOLS USA 21 PIECE DBTB121 JOBBER LENGTH THUNDERBIT HIGH SPEED STEEL 21 BITS TOTAL ARE IN GOOD CONDITION!