DTH (Down-the-Hole) bits come in various head configurations to adapt to different drilling conditions and rock characteristics. These bits typically feature hemispherical or round tungsten carbide inserts, but parabolic or ballistic inserts are also available in many sizes. Additionally, a combination of hemispherical and parabolic inserts can be fitted. Button bits are manufactured in a wide range of sizes to accommodate the most common types of down-the-hole hammers.