There are 10mm in 1cm so, 22mm = 2.2cm
An olive is a compression fitting used in plumbing. you would use a 22mm olive. you would use t in conjunction with a 22mm compresion fitting Before you use a 22mm olive make sure the pipe you are using the 22m fitting on IS 22mm and NOT 3/4. If it is 3/4 then you need a 3/4 olive from your merchants but they fit inside a 22mm compression fitting.
2.2 cm
0,86 inches
22mm diameter deformed bars unit weight kilogram per meter
22mm = 2.2cm
0.8661 inch
6 cm
22/1 millimetres.
15 to 22mm for RWD
22mm keihin carb
It is the same as 2.2cm by 3.2cm