The split set is a slottedsteel tube with one end tapered for easy insertion into a drill hole. The other end has a welded ring flange to hold the bearing plate.
The stabilizer is insertedi into a hole slightly smaller in diameter than the tube, using a simple driver too fitted to the drill. As the tube enters, its diameter is compressed and the slot partially closes. This exerts radial forces along the length of contact with the rock, providing the friction which holds the rock together. The driving force of the drill actively loads the bearing plate against the rock.
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