Lavelle 421BP Toilet Disc Seat, Black N/A Made in US Unique design fits both snap-on and screw-on tilt flush models Also fits Also fits American Standard actuator units Made in the USA Includes: (1) Seat Disc and (1) Snap-on/Screw-on Adapter Committed to Quality Made in USA Longest Lasting Products Quick &amp; Easy to Install New &amp; Innovative Products Replace Old Technology