This is a set of 4 tubes. 2 are 3/8" wide, 2 are 1/4" wide. They are approximately 2 3/8" wide and fit on our bead pins inside the bead rack. Photo is shown for scale, bead rack is a separate product in a separate listing and will not be included in your purchase. 

Bake directly on the brass tube and pop off your creations when they cool! You can also use these as cores for large beads and leave them inside.