(1)Inside Diameter:1/4"&1/2" ;(2)Wall thickness:9mm ;(3)Length:200m 300 m,400m . (4)Original place: Shanghai (China) (1)Inside Diameter:1/4"&1/2" ;(2)Wall thickness:9mm ;(3)Length:200m 300 m,400m per roll.(4)Original place: Shanghai 5Character: Low density, heat resistance, good thermal conductivity and UV-resistance. (6)Component: Embossed PE film, PE foam sheet and PE injection foam.