these are the ones for the 30AMAR
http://www.rotagriponline.com/index...d=4+jaw+chuck&option=com_virtuemart&Itemid=29
I don't doubt it !! but this does give you the codes/spec ..if you are lucky and someone has a set ..or you can trawl the fleabaythanks, never thought they would be available new, was looking for something a bit cheaper for the rotary table though!