Internal spine retainer(DF); Materail: Titanium alloy, medical stainless steel More Product Features Model NO.: 19 Standard: 19 Productivity: 1, 000pcs/month Unit Price/Payment: negotiation Origin: China Packing: wooden Min. Order: none Transportation: Sea Company: Jiangsu Guotai Int'l Group Machinery Imp. & Exp. Co., Ltd.