To support Hasselblad 500CM with 90 degree prism and 150 lens. Fairly heavy. One tripod head I have (pistol grip) isn't heavy duty enough. The other doesn't have the arms and is a pain to use. My terminology might be off. By pan head I mean with arms that extend from the head and are twisted to release for side to side and back to front movement. To fit on Manfrotto 3211 tripod. Please let know if you have one that fits the bill. Thanks.