YUNGUI 15X20 cm PCB Prototype Board Solderable PerfBoard,Universal Printed Circuit Board for Arduino and DIY Electronics Project, Gold-Plated, 6"x8",2 Pack 15 X20 CM (A) Color:15 X20 CM (A) as it is the type

as it is the type of spring required

( Please view the image for more detail)

Yields an ultra-fine finish and promotes longer tool life

STRONG STABILITY - The particle size of white corundum is small

or seize over time

YUNGUI 15X20 cm PCB Prototype Board Solderable PerfBoard,Universal Printed Circuit Board for Arduino and DIY Electronics Project, Gold-Plated, 6"x8",2 Pack 15 X20 CM (A) Color:15 X20 CM (A) as it is the typeYUNGUI 15X20 cm PCB Prototype Board Solderable PerfBoard,Universal Printed Circuit Board for Arduino and DIY Electronics Project, Gold Plated, 6"x8",2 Pack YUNGUI 15X20 CM PCB Prototype Board Solderable PerfBoard ,Universal Printed Circuit Board for Arduino and DIY Electronics Project, Gold Plated, 6"x8",2 Pack : Quantity: 2 Pieces Size: 15x20cm 6x8 inch(W x L) Specifications: single sided Thickness: about 1. 6mm Pitch: 2. 54mm(small),23. 6mm(large)