This Spacer ring is for the upper drive shaft bearing in the intermediate plate. This spacer is 5.0 mm and need to be grinded to the correct size. The cars and gearboxes are 50 years or older and due the history of the car, and worn out or re machined gearbox case this ring is an oversize and can be grinded down to the correct size that fit your gearbox. CNC machined.