Champion 5 16In Unc Nylon Insert Self Locking Nut 15Pk Replacement Packs Imperial Torin Big Red 3 8" Dr 21pc Z Series 3 8" Dr 21pc Z Series Socket Set Metric 7 22mm (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 4 Point wide stance design for maximum load stability Champion 5 16in UNC Nylon insert Self Locking Nut 15pk