This is a replacement Stainless Steel Sleeve that fits Kodiak 225 Calipers. When installing this component into the rubber Bushing, it is safe to lubricate inside the Rubber Bushing, and outside this stainless steel sleeve. Do not lubricate the outside of the rubber bushing. These parts are initially lubricated with a silicone-based grease from the manufacturer. It is not recommended to use a petroleum-based grease or oil after the fact.