Description:Good Material: These thumb screw knobs are made of plastic and iron, making them sturdy and durable with excellent rust and corrosion resistance. It has a smooth surface, clear threads, and is designed for long-term use.Feature: The clamping screw knob features a star-shaped design with smooth lines and a comfortable grip. The thickened nut head facilitates smooth rotation, ensuring safe and convenient installation. This knob is a great replacement for your damaged or old knobs.Easy to Use: Our 4-point knob features a threaded design and a star-shaped handle for easy rotation, allowing for tool-free tightening by hand. Tightening, installation, and removal are simple and convenient, bringing convenience to your projects. However, do not over-tighten the knob, as this may damage or strip the threads on the mating parts.
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