Tuning Gamo Coyote O'rings dimensions

Hello to all, 

Anyone know dimensions of orings for Gamo Coyote PCP rifle? I can bay a pack but shipment and custom to my country will kill me. I just find this information:



O Rings:
Ref: BK65.6 (16-9048) – Pack of 5
Ref: BK104 (16-9124) – Pack of 5
Ref: BK58.5 (16-9124) – Pack of 5
Ref: BK115 (16-9103) – Pack of 5
Ref: BK105.8 (16-9102) – Pack of 5
Ref: BK29.5 (16-9124) – Pack of 5
Ref: BK10 (16-9105) – Pack of 5
Ref: BK11 (16-6604) – Pack of 5
Ref: BK27 (16-6560) – Pack of 5
Ref: BK22 (16-6944) – Pack of 5
Ref: BK41 (16-5385) – Pack of 10