T5 Reflectors Are They A Different Size Than T8 Reflectors

[clivealive]

hi
 
got new T5 lights and have the old t8 reflectors , are the t5 reflectors on sale smaller or would i be buying the same thing.
 
if they are different in size would be worth buying
 
The old reflectors seem a bit large for them but just hoping someone would know as online some show as t5/t8 reflectors.
 i have seached the internet with no solution

 

[ReddSamurai]

im pretty sure the only difference is the bracket that holds them to the bulb is smaller and thats it