This set of 4 needles is from the Knit Picks mosaic knitting needle collection, 3 of the pairs of needles are in beautiful shades of blue, green and yellow and one pair is in shades of purple, blue, green and brown (warm tones perfect for fall!). The three longer needle pairs are 10 inches long and are in 2 sizes of 3.5mm (US size 4) and 4mm (US size 6) and a 3.75mm (US size 5). There are also 1 pair of interchangeable double-sided knitting needles that are in the size 7. The 10 inch needles retail as part of a larger set of 9 needle sizes for $67 and the interchangeable needles retail for $10 each. Each needle in this listing is sold separately