Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: It does lock
Review: This is one of those things to foil the casual thief. It does fine as a replacement for the usual non-locking hitch pin. It will not keep your bikes safe. The Allen Hitch Mount bike rack is three steel pieces that get bolted together into a fairly nice rack. A thief can remove at most two bolts (a smart thief removes only one bolt) and steal the bikes. You are left with the lower one or two steel pieces.I'm going to use red locktite on the bolts so they are hard to remove without a torch. No one will ever unbolt my rack. Then the lock makes sense.
