Mixet stem retainer nut - polished brass. Retainer nut size is 2" height x 1-1/4" width. For single handle tub and shower faucet applications. Perfect for contractors, maintenance-repair professionals, and do-it-yourself home owners. Includes (1) 2" height x 1-1/4" width stem retainer nut - polished brass, (2) brass washers, and (1) nylon washer . OEM number: MSRN-PB. Genuine OEM Mixet faucet stem retainer nut. Easy-to-follow instructions are included.