Fits Braun 3716 Well
I have an older Braun 3716 Oral B Pulsonic that still works very well. The original brushes were twist lock type, these are push on with no twist but they fit very well and snug. There should be no problem with them coming loose. The brush head is a much improved design over the old flat bristle and will reach into areas that the old design cannot. This is a very good priced item from Amazon as they are hard to find elsewhere. Yes, there are four in the package.
Rating: 5 stars