Down-the-hole hammers, offered by Little Beaver, allow operators to effectively drill as deep as 300 feet through hard rock formations such as limestone, sandstone and quartzite at a rate faster than standard mud rotary bits. Little Beaver’s DTH hammers operate with a wide range of drilling equipment without the need for specialized adapters. The 2-, 3-, 4- and 5-inch-diameter hammers can be powered by air compressors with outputs as low as 185 cfm.