Incredibit Sonde Housing – 4.125″ x 4.125″ Rotolock (B)

Railhead Housings and Rock Bits incorporate the patented ‘Stress Relief Structure’ with the “key and keyway” design to take much of the side stress off the bolts. This reduces tool loss due to bolts breaking. The newly designed rounded door incorporates another patent with the “Door Hold Down Tabs”. Simply drop the door in place, slide it back and install the bolts in front of the door. Housings require a Housing Saver which connects to the drill rod or quick connect system being utilized