will this lens work for my Pentax K20D?

i just won this on ebay for $10 i am hoping i can use it, does anybody know if it will work for the Pentax K20D
TOKINA Pentax 35-135mm 1:4-4.5 RMC

Hi Rainey,
Yes, you can use the Pentax-mount Tokina 35-135/4-4.5 on your Pentax K20D (or any other Pentax DSLR).
You will [...]