INROCK^® supplies a complete line of Sonde Housings designed to operate in jetting and directional motor drilling applications. We have addressed the need for greater structural integrity required when drilling rock by utilizing premium alloy steel and designing the unit to handle higher fluid pressures and shock loads. The double O-rings that seal the transmitter chamber are designed for operation up to 1,500 psi while still maintaining an operating safety factor. The epoxy slots required for signal transmission are not exposed to fluid flow or pressures. The units provide the flexibility to operate using either a 2 or 4 battery configuration.