Eliminates All Screw; Eliminates Need for Separate Overflow Test Plug; Eliminates Leaks Due to Loose Overflow Attachment; Eliminates Dual Inventory of 1 and 2-Hole Overflow Plates; ADA Compliant 1-1/2"-11-1/2 NPSM Solvent Weld, Wrought Iron, Schedule 40, PVC, Push Pull, Bath Waste Half Kit