Assortment of Straight Regular 1.80 mm Spring Bars consists of 60 pieces of Swiss made nickel plated regular spring bars with a body diameter of 1.80 mm from 10 to 24 mm in length. Set includes numbers 67-46020-10, 12, 14, 16, 17, 18, 19, 20, 22 and 24 mm. Refills are available.