This device does exactly what it says it will, it locks up in autoblock mode, feeds fairly smoothly also in that mode, works well as a normal ATC device and is pretty durable My only gripes are that the cable underneath does not parallel the slots which is supposed to prevent it from locking up which i have not found to be helpful at all, rather it can rub on the rope and as a result has worn through mine to the bare cable. Another gripe is that it can be fairly difficult to lower someone off in auto block mode. At the time it was well worth the money, as it was cheaper than other auto blocks, and is lighter than most, however with so many available I would recommend the Guide or Mammut's ATC Autoblock (vader I think)

These offsets perfectly compliment the larger alloy offsets that DMM makes. The largest in this set is the same as the smallest in the alloy. These things are rated to far higher forces than other pieces of similar size, they bite well into many rock types, seat well in flares and the upper sizes have that signature well like other DMM pieces so that the piece isn't fully resting on a crystal or a little bump. They're fairly durable considering they're made of brass, however the wires can be bent fairly easily so instead of yanking up when cleaning consider spending the extra few seconds to bump them out with a nut too. From what I understand they're a must have on the aid rack, I'd also consider them an extremely handy trick to have up your sleeve when free climbing. They really excel in thin flared granite cracks as well as similar sandstone cracks.

Petzl has had this product on the market for years with few if any changes and for good reason. It does everything well, it's compact, durable, simple and as efficient as the user. Perfect for back country areas where one may not want to walk in a full Bosch or Hilti electric drills but for individuals that may want anchors or lots of upper body training. It packs down well as it will accept the bit through the hand guard and wrist strap to keep it from poking holes in your pack.