ITEM NAME:10pcs Double Side Prototype FR4 PCB Tinned Universal Board 6 * 4 * 0.12 XBS Descriptio n Specification:.Material: FR4. 10pcs Double side Prototype FR4 Tinned Universal board. Special service: universal board. Product list :10pcs universal board. Hole: 20 x14 280 holes. : double spray tin. Power: 10 w. We'd like to settle any problem in a friendly manner.