what looks like a oil filter "claw". The installer is used on Audi's if you don't want to take the front bumper assembly off. (Only about 2" of room if you don't). The claw (that's what it looks to be) is used to remove filters on the 1.8T A4 if the car is in the air along with a 3/8 long extension. Otherwise, I just get it from the top, which means you have to remove the coolant reservoir.