Don't give them to him every day or in a year he won't have any teeth left!!!
When they chew those, it's bone rubbing on bone so it's just a matter of time before his teeth are worn to nubs. They may be stronger than the knuckle bone, but they won't withstand it forever. I use them a few times per year as a dental aid, maybe about 4 bones per year tops for my dogs.
Is there something else you can give him to do? My dogs enjoy rope toys and Jackson enjoys nylabones (the rubber ones). There has to be something else that he would like to play with that will be easier on his teeth.
Jackson- DDR/WGSL 5/5/10
Tinah vom Gildaf- DDR 4/29/13