Pipe has spaced slits covered by a removable polyester sock; ideal for French drain in fine soil, Expands to 52 feet in length, Complete range of Twist and Seal drainage accessories sold separately., Pipe includes a spigot and socket end designed to connect multiple pipe lengths together, Compact design allows for ease of transportation and use, To create a water-tight connection, apply RELN Part 000309 - 83 ml. Black Drainage Sealant to all pipe connections and assembly joints to ensure superior seal.