Product Name: RS-900A China Top Quality Optometry Equipments Trial frame Model NO.: RS900A Name: Trial frame Certificate: Ce ISO FDA Trademark: RS Transport Package: Carton Specification: CE, FDA, ISO9001 Origin: China HS Code: 90185000 Product Description Trial frameModel: RS900AHigh quality.The material is Nylon and Titanium .Plastics frame. PD is not adjustable. Packaged in one box, one box with 5PCS of frames. PD 56#58#, 60#62#64#66#All other models.