Package and Size--You will receive 3pcs clear sock knitting crochet template(with large hole) available in 3 sizes with lengths of 22cm/8.7 inch, 27cm/10.6 inch, 32cm/11.6 inch, and the width are all about 8cm/3.1 inch, the thickness is about 4.5mm/0.2 inch Acrylic Material--This clear crochet ruler is made of acrylic material for excellent visibility and practicality, not easy to break and ensuring longtime use Multiple Large Holes--This sock crochet ruler has notches and holes of different sizes to help you determine the size of your crochet and knitting needles, which is an invaluable addition to your knitting toolkit Convenient to Use--Crafted with precision and practical in mind, this sock ruler knitting crochet is built to last. It's lightweight and portable with plastic film Versatile Tool--The knitting gauge ruler is a sock blocker, embroidery tool and knitting gauge ruler all in one. It gives you accurate measurements and enhances your knitting projects