Anyone who likes to knit often has a large variety of knitting pins in various sizes and gauges. And how often do you find scattered knitting pins when cleaning and sorting wool? This is where Prym's knitting pin gauge is a practical aid in determining the knitting pin's thickness. This useful card made of robust, white plastic has 19 holes with the usual diameters of all common knitting pins ranging from 2 mm to 10 mm. This allows for every knitting pin gauge to be accurately determined using this practical knitting accessory from Prym.