Koken Z Series Socket Set 6 pt 4 14mm 1 4" Drive will run on either diesel will run on either diesel or kerosene 225 Micron 1 4" Dr 17pc Z Series Socket Set Metric 4 14mm (6 pt)Compact Designed 5 14mm shorter than standard for working in confined spaces Tolerance Hexagon Opening Precisely controlled to achieve a very positive fit between bolt and socket Tolerance Square Drive Precisely controlled to achieve the most secure fit between socket and handle Ball Holding Groove This mechanism gives secure connection between socket and handle Ratchet Handle Smaller head with 36 tooth gear and light ratchet movement allows working in narrow or confined spaces 2760Z 150 Z Series 6pt Sockets 4mm