♔The material is all FR4 full glass fiber plate, all Copper foils are Tin-plating for strength,which can effectively prevent the pad from falling off. ♔The solderable breadboard contains 2 size hole diameter of 1mm/0.04”and 1.4mm/0.055”. PCB protoboard holes are Suitable for resistor,capacitor,AWG(American Wire Gauge),SWG (Stand Wire Gauge),and other Electronic Components. ♔PCB board is more suitable for analog circuits and discrete circuits,four mounting holes at the corners of the board are very convenient for installing them together. ♔Electronic parts and Electronic equipment replaced and Repaired include: LCD Modules, Optoelectronic Displays, Capacitors , Resistors , Potentiometers , LED Displays , Electronic Accessories & Supplies,Electronics Stocks,Ative Compent , Integrated circuit , Diode , Transistor. ♔Our Guarantee:Quality assurance,efficient service. We provide 12-months warranty. Please feel free to contact us if you have any question. YUNGUI PCB Protoboard,3 Pack PCB Prototype Board Solderable Breadboard for DIY Electronics and soldering kit(4 inch X 6 inch ,Blue) Features: Includes 3 pack 10x15cm blue FR4 full glass fiber soldering breadboard. A universal design of the proto board, usually its proto board is covered with standard inter-IC (2.54mm) garden-type independent pads, compared to professional PCB printed circuit boards, pcb hole board has low cost, easy to use, flexible expansion and other characteristics. Product Description: Quantity: 3pcs Size: 150x100x1.6mm6 inch x4 inch x0.06 inch Specifications: single-sided Thickness: about 1.6mm Pitch:2.54mm(Middle),5.08mm(edge) Hole diameter:1mm0.04 inch (Middle),1.4mm0.055 inch (edge) Material:FR4 full glass fiber Color:blue Package List 3Pcs 15x10cm Solderable Breadboards