Watco Universal NuFit®. No time-consuming work. No tools. No extensive plumbing or repairs. You don't even have to remove the old drain. Simple installation with supplied silicone adhesive. Options include: 1- Tub closure2- Trim kit with Innovator overflow kit Adhesive Application options:1- Silicone - use this option when there's broken cross bars or no threads in drain2- Reversible combo 3/8-5/16-in pin adapter (Most-commonly purchased pin)3- 1/4-20 pin adapter4- #10-24 pin adapter (Image shown may not reflect actual product)