12x18cm Single Sided Copper Clad printed circuit board Laminate printed circuit boardThis single side printed circuit board Copper Clad Laminate Board is made of copper foil by the hot-pressing technology.Super-fine steel-wool, Restore4, Tarn-X, roscherite, Zap or similar before using.After that be sure to rinse and dry so without any water spots.Combined resin with reinforced material.As basic material of printed circuit board production.This Copper Clad Plated Printed Board is desgined For Etch Etching Project.Single Sided (SS) Blank Copper on the Front, FR4 Bakelite on the Back.With medium Size 12x18 cm (W*L), 1.6mm - 0.062" Thickness, Weight in 25g . Single-Sided Cuttable Fiber Glass and FR-4 Flame Resistant Good for Etch, Electrical, Power DIY IoT prototyping proto Projects.