Wobble Roller.

Nylon Centre.
Non Marking.
Dimensions (approx.)
Width (W) – 78mm
Outside Diameter (OD) – 106mm
Internal Diameter (ID) – 24mm (suits 23mm Plastic Rocker Bracket/Spindle (Twin Plastic Roller Bracket SB0176)
 
Please Note:  Wobble Roller is not compatible with the following parts.
Twin Forged Roller Bracket SB3801
Aluminium Roller Bracket (JS750 Trailers) SB3803