Sizes available include 2, 4, 6, 8, 10, 11, 12, 13, 14, 16, 18 and 20 in 3/8-circle and 1/2-circle models. 12/pk. Reverse Cutting Needles are available in stainless steel with regular eye in both 3/8-circle or 1/2-circle models. Reverse, 1/2 Circle, size 10