ITEM NAME:10pcs 4x4 Matrix 16 Key Membrane Switch Keypad for Arduino/AVR/PIC/ARM Keyboard Descriptio n Product description 100% new high quality Material: ABS Colour: Black Size: 6 * 6 * 3CM Product list: 10 * 4 * 4 membrane switch keyboard Product Description: 8P DuPont head spacing 2.54mm, can be connected to the pin connection circuit; the chassis connected to the pure white label surface can be thrown from the back of the keyboard High quality buy, happy buyï ¼ 10pcs 4x4 Matrix 16 Key Membrane Switch Keypad for Arduino/AVR/PIC/ARM Keyboard.Colour: Black. We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted. We'd like to settle any problem in a friendly manner. 100% new high quality.