A lockable lug nut set is an effective aid that reduces the risk of your expensive aluminum rims being stolen. Supplied in a set of four lockable lug nuts and one key. An extra key can however be ordered with the printed form enclosed in the kit or via the Internet: www.wheellockkeys.com/volvo/. Note that the key code printed on the enclosed form must be stated when ordering the key, so keep this form in a safe place.