Birch DMC Knitting Needles Hand Made Bamboo 5.5mm. The Birch Bamboo Knitting Needles are beautifully hand crafted with detailed painted prints on the point protector, adding elegance to your crafting. The Handmade Bamboo has been crafted from natural materials in order to be light weight, making it ideal for knitting. The full length of the Knitting Needles are approximately 40cm x 5.5mm needle width.