HP45 mole has high accuracy, low weight, and low air consumption. It doesn't require big towable compressors. It's handy and comfortable to use due to its small size. It's most useful in places with limited space such as pavements, fences, streets, etc. Reverse gear is applied by pulling the air supply hose. Easy and hassle-free working mode allows easy piercing. It also allows to quickly reverse the hammer if necessary. The reverse mode doesn't require turning the hose which is quite complicated and sometimes due to low stiffness and length of the hose impossible. HP45 mole is recommended for urban areas for telecommunication and electrical installations. Pierced hole 45mm allows installing 25mm diameter pipes in stable soils. In less stable soils with the possibility of collapsing walls, it might be done on short distances only.