
The only reason I bought this lock is because it has a 1/4 inch shackle which is small enough to fit through the bolt end of my fit bike mount. , reinsert the locking clip and secure it securely to the tow bar. Better than nothing but cheaply made in China. I'll look around for a better quality replacement. At least it looks like the more durable members of the Master Lock family. Update: I took a closer look at the lock and noticed that both ends of the shackle are held by locking bars (I only saw the top one that locks the moving lock). end ), so while it's not impossible to break into, it's good enough for storing a locker or transporting bikes (I can imagine a thief getting stuck under the back of my wife's Corolla and trying to pick it with two lock picks to open that it's not going to be easy. :)

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