addi 8" aluminum straight knitting needles are crafted from high-grade aluminum. The almost Teflon-like coating allows stitches to slide nicely, yet not too fast. These knitting needles are available in 8" US 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9. Sizes are listed in approximate US sizes -AND- exact metric sizes for your convenience. All addi knitting needles are manufactured to exact metric sizes. Please Note: Every addi product purchased from an Authorized addi Dealer comes with a Lifetime Warranty from any manufacturer"s defect.