HiyaHiya Interchangeable Needle Tips 4-inch (10cm) Bamboo; Size US 8 (5mm) HIBINTIP4-8 1 x HiyaHiya Interchangeable Needle Tips 4-inch (10cm) Bamboo, Size US 8 (5mm) Our Bamboo Interchangeable needle tips have nearly invisible screw on joins and a smooth finish HiyaHiya Bamboo Interchangeable needle tips are made with high quality bamboo impregnated with resin This makes HiyaHiya needles the strongest and smoothest bamboo needles available Lifetime Product Warranty: If purchased from an authorized dealer, HiyaHiya guarantees all products against all manufacturing defects; warranty excludes products damaged due to accident, misuse, abuse or negligence