Product Name : Tact Switch;Action Type : Momentary Dimension:4 x 4 x 1.5mm / 0.2″ x 0.2″ x 0.05″ (L*W*H);Button Size : 0.5 x 2mm / 0.01″ x 0.07″(H*D) Pin Size : 1 x 0.5mm / 0.04″ x 0.01″(L*W);Pin Spacing : 3.1mm / 0.12″ Material : Plastic, Metal, Copper, Electric Parts;Color : Black, Silver Tone, Gold Tone Net Weight : 4g;Package Content : 22 Pcs x Tact Switches Descriptions:Features square shape, 4 pins, copper button, SMD mounting. Used for electronic products, household appliances, digital products, test equipments, etc. High precision mechanism design offers acute operation and long service life. Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.