1.Shank diameter:6mm, 6.35mm, or upon request 2.Coating: ... , chrome, titanium available 3.Packing:8pcs/set, or upon request 1.Shank diameter:6mm, 6.35mm, or upon request2.Coating:nickle ... steel, stainless steel, fired ceramics, plastic and hardwoodsAdvantages of DUOLING:1. Good quality and competitive price2. Excellent after-sales service3. Shortest ...