This Moen Cache Kit includes one 1.5 GPM Junior sized California economy flow aerator by Neoperl and the key needed to install and service it. This aerator has a thread designed to fit Moen faucets.
The aerator key included in this Moen Cache Kit is designed to install and remove Junior size cache aerators which are size M21.5 x 1. Neoperl model 13 0451 0.
EC Part Number: #66728
Manufacturer Number: 13 0451 0
Manufacturer: Neoperl, Inc