Only available with steel or welded models. Can be used as main spiral stairs or center balusters. Standard issues only have one collar per baluster. There are endless potentials for collar quantity configuration with various spacing options – it’s a great way to accent spiral staircases with at an inexpensive rate. Collar quantity can be alternated along with the baluster thickness. All options are adjustable for a truly unique finish, good to accent spiral staircases staircase at an inexpensive rate.