PVC Circular Box 20mm / 25mm One way, Two way, Tee Way, Four Way, Through Junction Box, U, Y Junction Box, M4, M5 screw type PVC Circular Box 20mm / 25mmOne way, Two way, Tee Way, Four Way, Through Junction Box, U Junction Box, Y Junction Box,M4, M5 screw typeDifferent colors available For electrical and construction use. PVC Circular Box (One Way)