I have a circlip pliers from halfords

I tried to use it yesterday when changer a shooter spring but the holes on the clip are too small,
can anyone recommend one,or a set that has this small size ?
The other thing is the rotor clip,this fella.
What tool do I need to get these on and off without making a mess of the clip.
I'd also like to get some common size spare ones .I guess theyed be imperial sizes for pins?
thanks

I tried to use it yesterday when changer a shooter spring but the holes on the clip are too small,
can anyone recommend one,or a set that has this small size ?
The other thing is the rotor clip,this fella.

What tool do I need to get these on and off without making a mess of the clip.
I'd also like to get some common size spare ones .I guess theyed be imperial sizes for pins?
thanks