aluminium-plastic caps 1)13mm,15mm,18mm, 20mm,30mm,32mm 2)Aluminum cap, PVC painted top 3)Style:Transparent or Untransparent Aluminum- plastic caps,Flip off cap,Flip off seal1) Aluminum sealed with plastic flip off top 2) For glass antiboitic bottles and glass infusion bottles, etc.3) Specification: 13mm, 15mm, 18mm 20mm 30mm and 32mm. Aluminum-plastic bottle cap