{Experiments with metal shafts went via many phases. In 1924 the Union Components Company of Torrington, Connecticut, U.S., drew a seamless shaft of large-carbon metal which could be heat-handled and tempered. It had been permitted by the R&A in 1929 and substantially replaced hickory while in the early 1930s. From https://bonop419dkq4.humor-blog.com/profile