Almost universal wheel wrench with 6 slotted nuts. If you have damaged or lost your key this is a very economical replacement compared to larger snow chains. Most auto parts stores won't order one unless you have a key number. I damaged the key after 4 years, luckily I had a spare in the car. I needed to replace my existing one and found it. Get 2 for the cost. Keep one with a spare tire and one in the garage.