These 42mm drive shafts provide enhanced durability and effectiveness. They truly are designed for usage using the swing shaft caps in Item 54921. There is also a fluorine layer requested super smooth procedure. • 42mm Drive Shafts x2 • Shafts are crafted in durable steel with a fluorine area coating for minimal friction. • Needle pin sections are now 10.8mm (1mm longer than on past shafts), to have many out of swing shaft limit choice parts. • Compatible with dual cardan joint shafts employing caps from Item 54921.