Disc Spring,Metric Disc Spring,High Carbon Steel,Finish Plain,Min. Inside Dia. 9.2mm,Max. Outside Dia. 18.8mm,Thickness 0.30mm,Overall Height 0.6mm,Load @ Deflection (Lbs.) 31N,Deflection @ Load 0.26mm,Meets/Exceeds GB/T 1222-2007,Package Quantity 10