I removed this from comment about the arms:
The first readers would have understood this as a metaphor for the male body part ([Song of Songs 5:3](./03.md)), but this would be difficult to bring out in translation.
NICOT suggests it for the second line of the verse about his ivory stomach. "When one thinks of ivory, one thinks of a tusk of ivory, an object that could easily have erotic connotations." But because the author was "being more adventurous than usual in [his] translation and interpretation of the second part of the verse," I don't think it needs to be mentioned here.
For the arms, I changed "cylinders" to "rods" because things called "cylinders" are usually hollow.
See in Reader
PaulDeYoung
Henry Whitney
Susan Quigley
Dave Statezni
Joel Lonbeck
Jesse Griffin