●Standard Size-14mm(length)X14mm(width)X2.0mm(thickness) square straight with 4 edges,30 degree cutting angle ●For ROOCBIT CNC Spoilboard Surfacing Router Bit Woodworking Spiral Helical Planer Head 3Pcs ●Easy to operate,each blade has 4 sharp edges,if one is dull, just change it to the other side ●Carbide cutters Corners are very sharp with virtually no radius Best choice for turning straight profiles and nearly 90° inside corners ●We provide 1-Year Worry-Free Warranty and Unconditional 90-Day Refund & Free Lifetime Technical Support. Buy with confidence.