Oster Animal

Dog clipping tips please?
I have two Newfoundlands that I like to keep it very short. Can anyone tell me what blade to buy for my professional Oster A5 clippers Gold? 3f and 4f I have a one, but do not cut short enough. I am looking for a shovel that will deal with their dense undercoats and as the odd few knots in the legs and under the chin. I live in southern France and has to clip to your own comfort. Have been short the last 3 years and love it, but do it with hand shears sheep drive is no longer an option since they are large animals. Can you help me please, do not want to lose even more money on evil blade. Thanks
7F the will as short as a brick or boxer. It is a large sheet and will pass under tight mats. It is possible that two of them so you can turn the leaf on which it will become very hot by a dog of that size. (Get some Kool lubricant to spray the heat down to cool faster)
Tour of Y’oster
Hello there, just browsing for information for my Oster site. Truly more information than you can imagine on the web. Wasn’t exactly what I was looking for, but good site. Have a good day.