These Jigglers are perfect for locksmiths, auto dealers, towing/ repossession industries, and law enforcement. This set unlocks many foreign and domestic late model or older vehicles. They work on both pin tumbler and wafer mechanisms. A tempered stainless steel construction makes them durable and long lasting for use after use. This set of 10 is the same tool many locksmiths use today but wait thatÂ’s not all. These jigglers can also be used on other locking devices as well and you can keep your set close because they come on a steel key ring for your convenience. These car lock jigglers do not require the use of a separate tension tool, and they come with easy detailed instructions. Never be locked out again.