10 x filling probe o rings for the Shinsung (Shin Sung) Fire 201 & 202 air rifle / airgun.

There are 2 versions of this adaptor, both will work in the rifles however they have different sized o rings. The o ring size was changed in 2005.

Newer thinner style – o ring thickness: 1.5mm
Older thicker style – o ring thickness: 2.7mm