http://www.mcmaster.com/

p/n: 7289A22


This is the short arm key. If the arm is too long, you can't cut it with a hacksaw because the hardness is about Rc 50 or so. You'll have to grind the tip down on a bench grinder. DO NOT overheat the tip when you get close to the final length that you need. If you do, the temper will be lost and the wrench will round it's corners the minute you apply a decent load.