The Makita 4” Earth Auger Bit (E-25650) is for use with the 36V (18V X2) LXT® Brushless Earth Auger (XDG01, sold separately). The 4” Earth Auger Bit is engineered to create 4" diameter holes for post hole digging or planting. It features a 32” length for multiple digging applications versatility and replaceable blades for extended bit life. The E-25650 includes a pin for quick attachment to Makita Earth Auger Bit Adapter. The 4” Earth Auger Bit is made of durable steel for use in a variety of soil types.