![Shooters Edge](/templates/images/static/shooters-edge.png)
![SmartRest Screw Tuner](/images/virtuemart/product/screw_tuner.jpg)
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The Screw Tuner is a two way screw thread that will extend when turned one way, and contract when turned the opposite way. When clipped into position it will give the rest a locked position, however still allowing the user to fine tune a vertical adjustment by elevating or lowering the point of aim.
The Screw Tuner is adaptable to all SmartRest steel framed models that can fit a balance strut kit.