40mm Solid axle assembly.
Kit contains
 
40mm x 1040mm solid steel axle with keyway groove all the way across
2 x 40mm 3 stud kart hubs
2  x 40mm kart bearings
1 x 40mm brake disc and hub
1 x 40mm 428 sprocket and hub
keyways and wheel nuts
Will be supplied in random colour.