Lykke 5 inch Interchangeable NeedlesLYKKE interchangeable 5 inch birchwood needles are a strong, smooth and light. With their warm character, these lovely needles are easy on the hands and the eyes a true pleasure to work with. Needles come in Blush, Driftwood, Indigo or pastels. All LYKKE needles have both US and metric sizes etched on the needles to ensure long term readability. Set includes 12 needle tips from US4 through US17; 3. 5mm US4, 3. 75mm US5, 4. 00mm US6, 4. 50mm US7, 5.