This top quality GearWrench Metric Tap & Die 40 Piece set supplied in a sturdy case includes a medium Tap and Die ratcheting T wrench, small and medium tap adaptors, sliding T for adaptors, medium Hex Die Adaptor, Thread Gauge and a number 5 screwdriver. 17 Taps, 3mm to 12mm. 17 Dies, 3mm to 12mm and BSP 1/8.