For use with all adjustable strainers. Wide flange anchors drain in concrete and works in conjunction with the clamp collar to redirect waste through the collars peepholes if seepage occurs around the stainer. The WEJLOC clamp provides a non-puncturing positive bond of the waterproofing membrane to the drain body for applications where floors with standing water are to be sealed off from areas below. The collar is also invertible or an extra vertical strainer adjustment to meet finished floor level.