Mixer lever, content of the package 1 piece.
Additionial accessories for the use of mixer levers are either two flanged ballraces or two flanged bushes from Delrin as a low cost alternative.
The screwing on the blade holder arm complies with the kind of hole, i.e. it depends on the through hole or on the blind hole.
Please note for choosing the screws: blade holder 76/15 = socket-head cap screw 90075, blade holder 76/13 = socket-head cap screw 90085 with self-locking nut 90530.