I make cube bead bracelets & these work perfectly. Hint: I always tug hard on the end caps before attaching, just to make sure they don't pop off. If one does, just reattach with super glue.
I can put my bracelets on and take them off without assistance with your magnetic bar clasps. They come in different sizes and materials which gives a really nice "finished" look.
WILL WORK GREAT!!!!!
Your magnetic tube clasps make fastening a bracelet on oneself so easy.