Your search for "brass roller" revealed the following:
Lambretta Headset Roller Bolt and Washer each
$2.49Lambretta bolt and washer for throttle and gear brass wheel pulley. Sold each. INNOCENTI 15062015
Lambretta Clutch Needle Roller Bearing 19020070
$15.99Lambretta high specification clutch needle roller bearing.Sold each. 2 required.Note: These bearings are not to be used with crown wheels...
Lambretta Throttle and Gear Control Rod Ser 3 Li 312mm 19062030
$17.99•ÈÀLambretta series 3 Li throttle & gear control rod.For Li125 / 150 series 3 models with brass control roller wheels...
Lambretta late type series 3 black side panel roller set (19955088/91) 1 pair
$12.99Lambretta late type series 3 black side panel roller set (19955088/91) 1 pair Scootopia
Lambretta Stand Feet Roll Pin Stainless Steel MBFDOW6X40SS
$1.29This stainless steel fastener is used to secure the stand feet rubber to the stand. MBFDOW6X40SS
Lambretta Brass Bushing for Throttle and Gear Rods by MB DEVELOPMENTS 7676183
$9.99Lambretta brass bushing for throttle and gear shaft at the handlebar ends. MB DEVELOPMENTS Series 3 7676183
Lambretta Center Stand Feet Roll Pin - 15057009
$0.89Lambretta Italian made center stand feet pins for series 1,2,3, GP Serveta models SOLD each. 2 needed per Scooter. INNOCENTI...
Lambretta Screw for Throttle and Gear Change Roller Pulley
$9.49Screw for throttle and gear change roller pulley 5320091
Lambretta Late Series 3 Li SX DL and GP Handlebar Bush and Roller Roll Pin Set of 4
$2.49Roll pin set for headset nylon bushings and rollers post 1966 (set of 4) INNOCENTI 19962028
Lambretta Late Series 3 Throttle and Gear Roller Set
$15.99Lambretta late series 3 throttle and gear roller set.