Wanted spacer for casette

Hi all ,do anybody know where can i get in shops this spacer for casette?
I got trouble with casette pg 1050 with cb iodine,is not working correct.
Let me know,thanx

I'm pretty sure it should work fine without it, especially that you are putting 10 speed cassette onto it. The only wheels I know that need a spacer are some of the Mavic ones..
Could be some other issue maybe?

Thanx for reply,anyway i will order from CRC that spacer because w/o this it cannot work properly and hub can be damaged.

your as well to go to your local bike store as there is different thickness in the spacers. any decent shop will have them.