Ellipse Metal Dome,Oblong Dome,0-5 dimples Ellipse Metal Dome3-12.2mm ISO9001:2008 RoHS ... keypad Metal Dome sheet /snap dome sheet/dome array 1.Spec:diameter 3-12.2mm2.Scope of Elasticity:100gf- ... 350gf3.Travel:0.15 to 0.30mm4.Feel :50%+-10%5.life cycles:>1million DimpleNo Dimple ,1,3,4,5DimpleResistance< 1omhOperating ... 80%CertifyROHS,SGS,AOV Ellipse Metal Dome,Oblong Dome,0-5 dimples