Material: Carbon Steel Spherical washer DIN6319 Type C, C58 - 65 pcs Conical seat DIN6319 Type D, D65 - 65 pcs Spherical washer DIN6319 Type C, C43 - 50 pcs Conical seat DIN6319 Type D, D49 - 50 pcs Spherical washer DIN6319 Type C, C25 - 50 pcs Conical seat DIN6319 Type D, D28 - 50 pcs Material: Stainless Steel (SS316) Spherical washer DIN6319 Type C, C25 - 65 pcs Conical seat DIN6319 Type D, D28 - 65 pcs