The Watco 901 Innovator Half kit is a sturdy 1.5 in. Schedule 40 ABS pipe with solvent-weld assembly. The half-kit includes the overflow and drain elbows, overflow plate assembly, test plug, membrane and stopper and drain. The 900 series eliminates all screws. The bath waste also eliminates leaks due to loose overflow attachments.
Images shown are PVC, not ABS Black.