... .less coefficient of friction Model 6007ZZPrice$ 0.65/pcType 6007 ,6007Z,6007RS ,6007 2RS , 6007N, 6007NRMaterialGCr15_China/ (AISI) 52100_American/ (Din) 100Cr6_GermanyCertificateISO9001:2000ClearanceC2, C0 ... SunnyTel: 0086-635-8517997, 8517456 6007ZZ DEEP GROOVE BALL BEARING 6007 60072RS