... ±4.00.9mm - 401' - 2M23, 22, 21, 20, 19, 181-1/2"40mm±5.01.0mm - 451' - 2M23, 22, 21, 20, 19 ... ±6.01.2mm - 401' - 2M23, 22, 21, 20, 19, 182-1/2"65mm±7.01.0mm - 301' - 2M21, 20, 19, 183"75mm ... , Preventing of rock breaking, Protection engineering of seaside area,ect. High quality Gabion Box(Factory direct)