Saliva ejector on/off lever for saliva ejector (SE) valves. Lever is a replacement for evacuation valves that use a plastic lever. Autoclavable. Pkg of 5. Compatible with most valves. Instructions for Maintaining Saliva Ejector On/Off Lever: 1. Disassemble the lever from the saliva ejector valve. If lever is difficult to remove, then use any kind of tool to pop off lever. 2. Put parts in autoclave if they need a more thorough cleaning. Parts cannot be cleaned by sonic methods. 3. Lubricate cleaned or new on/off lever with silicone lubricant (#03-40). 4. Finally, reinstall the lever back onto the saliva ejector valve.