GE Edger Blade, 9-In 490-105-M018 Genuine OEM. This is a Genuine OEM GE part. This blade (part number 490-105-M018) is for edgers. Blade 490-105-M018 attaches to the drive shaft to cut and edge the grass. Wear work gloves to protect your hands when installing this part.... - GE Edger Blade, 9-In 490-105-M018 Genuine OEM.