A Faster, Cleaner Way to Dig Need to dig a trench? Here's a faster, cleaner solution. Thanks to its narrow design, the Blue Viper Shovel is perfect for installing and burying conduit, wires, piping or for drainage. You can even control the depth of the trench. Just adjust the unique depth control pin, so you can dig to a uniform depth (4, 8, 12, or 16). Creates cleaner sidewalls! The two side blades neatly carve the sides of the trench (great for edging or lawn sprinkler installations)