Product Name: China Hebei Bonsheng Nylon Thread Brass Insert Lobe Knobs Material: Plastic Type: Operating Standard: International Customized: Customized Color: Fixed Certification: CE, ISO Applicaion: Machinery Trademark: Bonsheng Transport Package: Plastic Bag Then Carton Box Origin: Hebei Hengshui Product Description black color and tis material is bakelite,have smooth surface,allowing for high-impact resistance and durability.beautiful,comfortable black powder coated finish optimum utilisation between 50 and 130 celsius.outstanding resistance to oil as well as tough climatic conditions.There have been many years with popular praise and good reviews.And there we have a large variety of shapes of handwheel