Armadrillco downhole tooling from StraightLine Professional Drilling Solutions has box-by-box high-flow/side-load transmitter housings, high-flow/side-load drill heads and rock tool technologies to directly target hard condition pilot hole drilling. The aggressive Bull Bit features three carbide-penetrating teeth and 74 carbide-grinding buttons. Transmitter housings and drill heads incorporate a lid security system and urethane-sealed transmitter cavity that allow larger slots and protection of electronics. A bulletproof drill-head mounting system eliminates under- and over-torqueing of bits and cutting heads. 800/654-3484; www.straightlinehdd.com