From the manufacturer:
Crystal Palace single pointed needles are long and lovely. They are made from specially-selected Japanese bamboo. This variety of bamboo contains densely-packed fibers that give it excellent tensile strength. The needles are cured then polished with a plant-based wax that penetrates the needles and creates its silky smooth surface. The quality and pleasure you will experience from working with Crystal Palace Bamboo is the result of over 100 years of expertise in the crafting of bamboo knitting needles.
Sizes available:
US 13/9.0 mm (9 inch length)
US 17/12.0 mm and 12.5 mm (9 inch length)
US 17/12.5 mm (12 inch length)
US 19/15.0 mm (9 inch length)
US 19/15.6 mm (12 inch length)