Matching bones in blender +2.8

Hi ,Is there any options to match this bone (selected in blue color) like this bone(selected in red color)?

Hi there was a option only for bones with naming postfix .R and .L

name bone like bone1.L and other bone1.R then press N -> tool -> x-axis mirror option select
then try to move some of this bones in pose mode
if bones are more than just R/L sides, then you probably need to use python scripts for adjusting bone sizes.

I got 4 legs ,as you can see only 1 is matching perfect. So I tried move it in pose mode before (put this post) but they still arent perect match exept that 1.

as I say the key for successful lays in using mirroring feature is bone naming