See zaptoon's post
here.
I decided to contribute and made up these icons:
View attachment 71786
The perfectionists might notice that the SSD icons posted in this thread are actually oversized, compared to Apple's default hard drive icons. The difference is illustrated in the icon preview above (I sized the WD Red drive to follow almost the same dimensions as Apple's default drive icon). There is no margin on the SSDs, which will make them appear bigger compared to a default drive icon on your desktop.
I've also attached my Photoshop file for the WD Red drive in case anyone wants to show off their old fashioned spinny disk.