The Armadrillco transmitter housing has been adapted to the RockEye hammer system from StraightLine HDD. The side-load housing technology gives users easy access to electronics, larger capacity fluid and air passages, and improved durability. The Arma-Loc system is a field-proven design that gives quick access to electronics by removing a single pin. Free from threads, the Arma-Loc system virtually eliminates problems associated with damages or over-torqued bolts as well as vibration-induced lid failure. A urethane and O-ring system is designed to seal and protect the sonde cavity from fluid and debris infiltration. The system also forms a cushioned platform that shields electronics from vibration and heat produced by a hammer working in harsh environments. 800/654-3484; www.straightlinehdd.com