uxcell 4x4 Matrix 16 Keyboard Keypad USE Keys PIC AVR Stamp Product Name : 4x4 Matrix Keyboard Keypad;Key Type : 4x4 Pad Size : 68 x 65 x 10mm/2.7&#39;&#39; x 2.6&#39;&#39; x 0.4&#39;&#39;(L*W*T);Mounting Hole Diameter : 2mm/0.08" Mounting Hole Center Distance : 60 x 60mm/2.4" x 2.4"(L*W);Material : Plastic, Electric Parts Color : Black, White;Net Weight : 21g Package Content : 1 x 4x4 Matrix Keyboard Keypad