UNC3/8-16 Knurled Thumb Screw Hand Tighten Grip Knob Bolt For Adjusting fixation. ● Model: Knurled Thumb Screws. ● 【High Quality 】: Our Thumb Screws Are Made from Aluminum Alloy, Which Provides Excellent Corrosion Resistance and Rust Prevention, Ensuring Long-lasting Durability.
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