Can anyone tell me if the 202 block as the same size/number ofteeth as the 205 block pulley

it seems to fit alright and looks like the same size but its only got 3 holes round it instead of 6 holes ( i think) that the 205 cossie block has
Reason being i cant find a cossie one and am hoping to make do with the 202 block one!
cheers