(best price, high quality) specifications & details: 1) sizes: 4.5 5.0cm, 5.0 5.5cm, 5.5 6.0cm, 6.0 6.5cm, 6.5cm and up 2) transporting and storing temperature: -3 0c 3) supply period: all the year round 4) shelf life is long and can be stored for up to 9 months under proper conditions.