These Cut Spikes are used for heavy construction work. They drive well through planking and heavy timber for deck and bridge work. They are made on our oldest nail machine (circa 1865) by heating the steel plate to a reddish hue and feeding it by hand into the massive machine. Spikes are cut at a rate of 40 per minute. Available Hardened in Standard Finish or Hot-Dip Galvanized. Available in 50 lbs., 5 lbs. and 1 lb. options. Refer to each product page for approximate nails per pound.