Alex, I have just ordered a pair of cwts for the EQ3, 1 x 1.85kg and 1 x 3.45kg. They fit the EQ6 cwt shaft (19mm). I only want the 1.85kg and am drilling it to 24mm which my shaft is. Are you interested in the 3.45kg cwt?
Sorry mate.. it has been some time since I needed it so after a while I just gave up and got brand new ones.. I'm gonna remove the post.
But thanks anyways!