The famous addi Comfort Grip crochet hooks feature color-coded handles for ease of organization and perfect for those crocheteers seeking an ergonomic crochet hook. These crochet hooks are available in the following sizes: US A (2.00mm), B (2.50mm), C (3.00mm), D (3.25mm), E (3.50mm), 3.75mm, F (4.00mm), G (4.50mm), H (5.00mm) and I (5.50mm). Sizes are listed in approximate US sizes -AND- exact metric sizes for your convenience. All addi knitting needles are manufactured to exact metric sizes. Please Note: Every addi product purchased from an Authorized addi Dealer comes with a Lifetime Warranty from any manufacturer"s defect.