Mavic lockring, left-hand thread M33x1.5 mm, material thickness for Mavic Ellipse + Comete, Track Cog Lock Nut
Steel locking ring that secures the sprocket on the track rear wheel. To ensure the sprocket remains securely in place even during the toughest use on the track, you should always fit your Ellipse rear wheel with this sprocket locking ring. The left-hand thread allows fitting only on Mavic wheels.
Herstellerinformation: MAVIC GROUP SAS, Parc Altais, 44 Rue Saturne, 74650 CHAVANO, https://mavic.com