Black & Decker 90541434 3P mower replacement blade insulator SPCM1936 CMM1200 3 Pack This part is compatible with models including; CMM1200 TYPE 3,CM1936 TYPE 2,CM1936 TYPE 1,CM1836 TYPE 2,CM1836 TYPE 1,SPCM1936 TYPE 1 Blade insulator 90541434 holds the blade in the proper position on the motor shaft Genuine Original Equipment Manufacturer (OEM) part. Compatible Brands: Black & Decker This blade insulator (part number 90541434) is for lawn mowers Unplug the lawn mower before installing this part