cork stopper 1)called 1+1 cork stopper 2)on two ends natural cork pieces 3)middle agglomerated cork 4)elas cork stopper1)it is also called 1+1 cork stopper.2)with natural cork pieces on both ends,agglomerated cork middle.3)material is Portugal cork.4)standard size,23.5*44mm.5)elastic,non-spill,healthy,eco-friendly.6)1-color logo printing is available. small glass bottles with corks