The shoulder inscriptions that drop off of Sapphiron work just like leg armor kits, so you can apply them to any boe shoulders then mail them to your twink. Example the of the shoulder inscriptions:
Power of the Scourge - Item - World of Warcraft
Resilience of the Scourge - Item - World of Warcraft
Fortitude of the Scourge - Item - World of Warcraft
Might of the Scourge - Item - World of Warcraft