This is a genuine Kohler replacement part. The hub is designed by the manufacturer for use in shower valves and thermostatic valves. This part is made of high-quality plastic, and is placed in the escutcheon and seal. You may require a wrench when replacing this item. This part is sold individually.
This is a genuine OEM sourced part used on several lavatory faucet models. The plastic washer secures the bonnet to the lever handle. Sold individually, a pair of pliers and a screwdriver may be necessary for the removal and replacement.
The washer goes next to the stem extension and is made out of metal. This part is an OEM from Kohler for use in faucets. It is available as an individual replacement part. If this item becomes bent or broken it will need to be replaced and may require a screwdriver during the installation.