Made of strong birch wood, the LYKKE Umber knitting needles are very smooth and light. The driftwood knitting needles are easy on the hands and the eyes making these tips a pleasure to work with. All LYKKE knitting needles have both US and metric sizes etched on the needles to ensure long-term readability. The LYKKE 3.5" Interchangeable Knitting Needle Tips are sold in pairs with needle sizes US 3 to US 10.75.