ITEM NAME:140pcs momentary tactile push button switch micro SMD SMT tact switches 14typ %o.1 SMD 3 x 6 x 2.5mm 10Pcs. 2 SMD 4 x 4 x 1.5mm 10Pcs. 3 SMD 6 x 6 x 5mm 10Pcs. 2, This light touch switch is waterproof, prevent oil, anti-pollution, anti-static interference.