M3 M4 M5 M6 M8 Nylon Plastic PA66 Thumb screw Knurled +Slotted Black White Clean
Material: Nylon PA66,PC,PP,PVC. PP (polypropylene) has excellent heat resistance and chemical corrosion resistance, and its color is white;. PVC (hard polyvinyl chloride) has good corrosion resistance and water tightness, and the color is gray.