I have not been able to find a lock kit for a 2012 Buick Lacrosse anywhere. Bought them even though Revane said they didn't fit. Screw size 14mm x 1.5. The seller wanted $200 for a full set of grommets and locks, but I didn't want the full set, and thank you. The only problem is that the lock slot size is 13/16 and the key is 7/8. Therefore, you cannot use the included socket wrench to install or remove locks. I have a 7/8 wrench in the trunk. A minor inconvenience knowing my bikes are safe.