Uxcell a13070200ux0781 SPST Momentary Push Button SMD SMT Tactile Tact Switch, 4 mm x 2 mm Product name : tact Type : Momentary Switch Size : 4 x 2 x 3 mm / 0.16" x 0.08" x 0.1"(L*w*t);material : plastic, metal, electric parts Color : white, black Weight : 3G Package content : 50 x tact switches