... , ISO/TS16949. 4. Good quality,low price. Details of IIR toy tire: Materials Comply with ROHS, IIR, or NR, Viton, EPM ... 90 shore A or as your request.Tolerance Strictly upon international standard, no flash.Color Black, transparent, green, red, yellow, grey ... the design based on your idea. Customized Rubber RC IIR Toy Tires