Master Lock American/Master Lock - (3) Keyed Alike Solid Steel, High Security, Hidden Shackle Padlocks, w/Bumpstop Technology A2010NKA-3

These locks are great! I was looking for a more secure puck lock for my work van. Most are 5 pin and easily packable. This model is one of the best. It is a 6 pin lock, with changeable pins for rekey and it had a special bump stop feature. These lock are heavy and sturdy! Very happy with purchase. I use these on a set of "Slick-Lock" brand brackets on my van, fits perfect. Also the back is flush/flat for more security. Some puck lock backs are not flat which leaves a gap on one side.

These are a beast. Had to return because they would not fit my trailer. My bad for not measuring first. I had a puck lock that had a notched back and it fit. Did not realize that a flat back would not. Wish they had because they are very sturdy.

Beware that Amazon shipping was unable to ship the order correctly twice. Order was for two locks and four keys being the same key number both times Amazon only shipped one lock and two keys. The locks are good cuz I forgot them in use already from a previous order.

Great locks! Only draw back is need to grind a bit off my trailer latch to make them fit. Not that big a deal

Excellent product and would recommend to all with a Interstate 1 Cargo Trailers

Other product reviews say this will beat Master Lock if someone tries to lockpick. Gives me extra sense of security after having my Chevy work van broken into after the thief probably just punched a large screwdriver into the keyway and simply turned the linkage to open door

Does not fit cargo trailer door locks. Will fit on flat to flat applications only. Very sturdy just can't use for my application

Los tenjo ya ase un ano y ni el agua ni la intemperie los a oxidado. Bale la pena comprarlos un poco carritos creo pero los vale al que le gusten la calidad ,durabilidad,ext no lo piensen .