String Trimmers

i have a 1992/3 Husqvarna 125R string trimmer. its head is finally beyond repair. so i'm trying to finf a T25 or T35 to reolace the factory head with. the T35 Professional Tap Advance trimmer head (univeral) shows 5 different inserst on the husky webpage. but on that same page the first model the say it's compatible with is a 128,,,

i need to know what string head will fit a 125R so i can order the correct head and not be worrjed about it not working on my 125R.

thqnkw,
K3N