Crystal Palace Bamboo Knitting Needles and Crochet Hooks are made with the savvy needle artist in mind. There are many features that make Crystal Palace Classic Bamboo a choice above the rest. First, the bamboo takes approximately 10 years to mature, whereas most bamboo products use bamboo that takes 3-5 years to mature. This makes for a much stronger finished product. The needles are put through a steam autoclave process that prevents the needles from warping. Then they are fnished with a natural resin that penetrates the needle, rather than with a lacquered top coat that could chip. The needles are hand-inspected before packaging for final quality control. Watch the slide show for more information on the manufacturing process.