I have an old but gold Premier XPK drumkit, an original one, made in England. I love the sound of it but the balls inside tom holders got all dented here and there so adjusting the angles of the toms has started to become troublesome. I purchased these items as a replacement for those tom holders in my Premier kit. They are good quality. Heavy, sturdy and all but the ball size is slightly bigger than the original ones on my drums. They still fit, but i needed to replace the screws underneath the tomholders with slightly longer ones so that they will be able to attach. So they do the job for me, after a troublesome time i am able to adjust my toms to my comfort again. But i would advise you to make sure about the size and be precise about it.