I just brought 3 of these for my girls and they go nuts for them. They last for a long time, despite all day chewing. The dogs love the smokey meat taste and I love that they are 100% all natural, real bones. The knuckle bones are big and they don't splinter or shatter as the dogs chew away on them.
The only drawback is the size, and my smaller heeler can't drag it around the house as easy as the other dogs do. They are priced right too at under 4.00 a bone.

Pros: long lasting chewing action

Cons: only big sized knuckle bones

these are great. they keep my Aussie busy chewing the bone instead of my furniture

Pros: long lasting

Cons: my dogs dont stop chewing on them