29-2 sight

[Pocketrocket]

I'm looking at ordering a rear sight blade kit for my 29-2. There appear to be several sizes, I assume there are different heights depending on barrel length? I thought I saw a post about this but could not find it. Which one do I need for a 6.5" barrel?
TIA

 

[usedkid]

0.146" height is correct for 29-2 6.5"…