Stainless Single Cardan Joints without keyway - L: 55mm OD: 22mmStainless Single Cardan Joints L: 55mm OD: 22mm 1 piece with 2 mini screws and 1 hex wrench Overview: These single cardan joints are made of category 304 stainless steel. They are used for DIY projects and can also be commercially used. Mesaurements: OD: 22mm L: 55mm Screw M6 Note: the inner diameter concertion is stated in the options. The joint is made without keyway.