I originally got the eight-piece set. I was so pleased with them I have gone back and purchased the individual needles, so I have a complete set from 2 cm to 12 cm now. I won't use any other needle now. I love the longer length. I only use metal needles, and finding longer length is very hard. The short needles dig into my arm. The knitting company is one of the few to offer the 40 cm needles. Great product.