A4218 - Swingarm nut socket.

O.D. 43.1mm. I.D. 30.3mm.

4 Pins, pin width 4.8mm.

A7282 - Swingarm lock nut socket driver - DL 1000

O.D. 43mm. I.D. 34mm.

4 Pins, pin width 5.6mm.