Genuine Makita 681623-9 Insulation Washer for a wide range of Makita corded power tools, including the 2012NB planer thicknesser, 1100 planer, LS1030 mitre saw and selected circular saws, grinders, sanders and chainsaws. This replacement insulating washer is used within the motor assembly and is ideal for replacing a worn, damaged or missing original component. Makita parts data identifies 681623-9 as Insulation Washer.