The main body is made of high strength alloy aluminumbydie-casting
◄ All parts of holder is made of alloy copper, durable use
◄ Worm wheel and worm is Gear-box is made of specialmaterial, bear wear and tear
◄ The speed system is adjusted by feeler of controllingsilicon unit, easyoperating
◄ Quick switch for hose assembly, easy operating
◄ Suitable for ship building, oil, chemical, and metal structurefactory, etc
