Brizo RP72413PN Push Button Pop-Up Without OverflowPush Button Pop Up Without Overflow 2 3 4" diameter push button drain Less overflow holesfor use with lavatory sinks less overflow drain holes Fits sinks with standard 1 5 8" drain hole size If used with electronic lavatory, must use plastic tailpiece included Weight: 1. 048 lb Additional Resources: Specification Sheet Installation Sheet