The AISI-329 stainless steel machine shafts are machined at both ends and include a cotter pin, nut and washer, with a 1:10 conicity and available in diameters of 60 to 100 mm. The good properties of AISI-329 stainless steel enables the marine shafts to withstand extremely high stresses with small diameters. These features make them a great option if you want to keep the old stern tube and shaft brackets when increasing the power of the marine engine, with significant economic savings.