This ground drill extension tube is used to extend the ground drill to the length that matches your specific purpose Features: You can assemble them easily to corresponding ground drills with provided screws Made of super strong steel, the tube is very strong for various uses The extension tube can be combined with our drills You can check our shop for the compatible drills (sku 141023-141028) Specifications: Dimensions: H: cm Material: Steel Model Number: 141029