Another set of hints
Quite a few people have gotten the first two correct, but then some wander away from the second one.
A small number of people did guess what the third blank is, but in the previous two weeks posts. This one should be a "ring"er.
This hint should be sharp as a "knife"
The forth blank has had a close "cousin" posted as a pen by simomatra in the past year. And it is a very nice pen as well