A quality cutting fluid should be used when performing any cutting tapping facing or reaming procedure on a bicycle frame. CF-2 Park Tool Cutting Fluid is an environmentally friendly soy-based cutting fluid that makes any frame cutting tool work better and last longer. Park Tool CF-2 can be effectively used on all metals including aluminum steel and titanium. Always use cutting fluid such as Park Tool CF-2 when machining.8 fl. oz. (236 mL) plastic bottle with flip-top spoutNOTE: Some painted surfaces can be sensitive to oil and grease. Clean off any excess oil or grease immediately. Test first on an inconspicuous area to see if it causes a stain or discoloration