Model Number: Hing HL400101-#6897 Brand Name: huali Key Specifications/Special Features: Material: duroplastWith or without screw boltZinc-plated steel studTapped blind holeHigh-impact-resistant and durabilityStandard color: black, optimum utilization between 50 and 130°CVarious materials, styles, luminous appearance are availableCorrosion-resistantNecessary part of machine toolHigh strength, reinforced bakelite, resistant to solvents, oils greases and other chemical agents, making this knob, used for medical machines, equipment for food and pharmaceutical industry and wherever hygienic, climatic and environment factors or laws make mandatory to use corrosion-resistant materials