1 x HiyaHiya Circular 16-inch (41cm) Sharp Steel Knitting Needle, Size US 17 (12mm). 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.