specification：
colour：
use：
Code Size（MM） Wall thickness (MM) Color
EA1013 10.2 1.3 Natural/Grey/Red
EA1620 16 2.0 Natural/Grey/Red
EA1622 16 2.2 Natural/Grey/Red
EA2020 20 2.0 Natural/Grey/Red
EA2028 20 2.8 Natural/Grey/Red
EA2523 25 2.3 Natural/Grey/Red
EA2535 25 3.5 Natural/Grey/Red
EA3229 32 2.9 Natural/Grey/Red
EA3244 32 4.4 Natural/Grey/Red