Reliable Material: Each Metric M8 knob consists of a plastic star-shaped knob with attached brass insert. The thru knobs screws have no edges or burrs.
Easy to Install: The star knobs are designed to be easy to grip and is ideal as a fixed fixture. No other tools are required, it can be screwed directly into the screw and used.
Internal Thread Size: The thread specification of the T track knob is metric M8.
Adjustable for Bolt: The M8 bolt can go all the way through the tightening knob, secure it firmly, and extend out of the top to provide sufficient adjustment range.
Versatile Applications: The screw-on clamping knobs are suitable for milling fixtures, drilling machines, saw fences, lathes, and fixtures that require metric M8 internal threads.
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