The plural form is kilos.
"My dealer has 10 kilos waiting for us!" (Plural)
If we are talking about computers or other binary systems, then it refers to 1024 times, and it gets a capital K, e.g 1 Kb = 1024 b, 4KB = 4096 B etc.
Honest, confusing but true.
2.2 pounds of some shit that puts a smile on everyones face =]
wise kid: HA! thats his name first of all and second of all hes 2G4U