Spring Ball Design: The spring ball is designed so that these T-slot nuts are installed where you want them and they don't slide around when you screw them in. You can easily insert and remove these T-slot nuts.
Material: high-quality carbon steel structure, high hardness, long service life, nickel plating on the surface, good rust resistance.
Size: M4 T slot nut for 2020 aluminum profile with M4 groove for T-slot aluminum profile 20×20 series.
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