01-11 YAMAHA YZ250F: BikeMaster Steel Magnetic Oil Drain Plug Protect your bike at the same time make it look better. Your choice of billet aluminum or steel drain plugs. Comes with powerful magnets embedded in them so they catch any ferrous metallic particles that might be scraped from cylinder walls or from gears, etc. Clean metallic particles of next time you drain the oil. M10 X 1.25