This is a fragment remover intended for use on tooth models or extracted teeth for practicing the loop technique. This is a non-profit sale. Only the material costs are charged here. To use the FRGX, you will need a sealing ring with an inner diameter of 2mm ( example here:https://amzn.eu/d/9RFHbmg ) and a wire with cannula ( example here: https://fragteam.myshopify.com/products/wireloopbox ). Have fun!