Yato.

1 2 x step drill bits for drilling torn off glow plugs: 7 x 5.5 mm and 9 x 5.5 mm Tap and holder for taps with ratchet function: M8 x 1.0, M10 x 1.0 and 6.3 mm (1/4 inch) - 28 UNF This set ensures quick and easy removal of defective glow plugs, Weight: 2.20462262 Pounds, Manufacturer: YATO