A releasable drill string stabilizer is provided which includes a stabilizer body, a pair of end caps mounted with said body and a pair of clamping wedges positioned relative to the end caps and stabilizer body to clamp the stabilizer to a suitable drill string in various desired locations. A pin means and retainer slot means is provided for connecting the body and wedges relative to each other to prevent movement of such elements relative to each other and the drill string.
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