Coupling for connecting two shafts

A driveshaft including a rotation axis including a coupling providing a connection between two shafts, one shaft connected to a first constant velocity joint and the other shaft connected to a second constant velocity joint, said coupling comprising:

• first means for transmitting torque, said first torque transmitting means associated with the two shafts, said shafts having tensioning means at their end faces for axially tensioning the shafts relative to one another, said tensioning means includes first and second tensioning sleeves, said first and second tensioning sleeves including threads for axially coupling to one another, with one of said tensioning sleeves being associated with each shaft and being axially supported on said shafts;
• said shafts towards end faces supporting one another including a shoulder which projects from an outer circumference and including a predetermined axial length, each of said shoulders including said first torque transmitting means, said first tensioning sleeve including a bore provided with second torque transmitting means which are engagable with said first torque transmitting means of each of the shoulders in a form-fitting manner.