Wooden Color Card Tool: Package includes 4 pieces of wooden shade cards- Aria Blanket, Cozy Blanket, Coast Blanket, Hydrangea Blanket, providing you with a convenient and organized way to keep track of your color scheme. Size Reference: The overall size of the wooden ruler is approx. 60mm/2.36inch wide, 240mm/9.45inch long, 3mm thick, hole: 4.5mm, ideal for hand knitting. Wooden Material: The wooden ruler has smooth edges, sturdy and durable, lightweight, and simple layout, allowing you to effortlessly explore a variety of color patterns and experiment with different yarn swatches. Scale: Each board has 15 holes and different color markings, 0-7inch scale markings, the back side is blank so you can make some important markings. It is a convenient tool for creative craft lovers! Convenient: This multi-functional color card can be used as a blanket or other knitting project planner and wool color card organizer, a must-have tool for all your knitting, crochet and wool related projects!