... ) Material: Gcr15 (Chrome steel) -china, (AISI) 52100-American, (Din) 100Cr6 -Germany, carbon steel, iron. 4) Shield / Closure: Plain (Open), Z, ZZ ... promises: Jinan Tengyi Bearing Co., Ltd. Is a famous bearing manufacturer authorized agent and is one of the world famous branded ... sincerely want every customer to establish friendly relations of cooperation Manufacturer of NSK insert bearing P205