Set of 10 Ring elements ranging 

from 2.5mm to 4.75mm in .25mm increments  all size marked .

AND

Set of 10 fun elements for you to try !

fit parker hale, BSA and other  17mm sights  see pic for dimensions 

Cut from 0.5mm Steel then chemically blacked to give a non reflective mat finish . 

Made here in the UK for us 

I can ship worldwide  customs and import tariffs are not included and if they apply in your country you will be responsible for them  shipping is  airmail  internationally and royal mail in the UK