12 Button Keypad with .1" Spacing Header Output, Single Pole / Common Bus (2" x 0.45" x 2.5"), Black with White Buttons12 buttons in a 3 x 4 style layout Buttons are labeled 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, *, and # 0. 1" spacing header output for easy fit into breadboards Single Pole Common Bus Measures 2" x 0. 45" x 2. 5" (not including pins). Buttons are 0. 33" x 0. 29" x 0. 10". Color: Black with white buttons This keypad features 12 buttons in a 3 x 4 style layout. The buttons are in the same layout as a telephone keypad and are labeled 1, 2, 3, 4, 5, 6, 7, 8, 9, 0,