Top quality 16mm x 1.2mm 'C' type circlips with single tang to stop the piston gudgeon pin coming out the piston. Used with various Lambretta top ends other than standard pistons, as they tend to use the standard internal circlips, the same applies to Vespas, these are mainly used on T5 and PX 200+cc Malossi, Polini and Quattrini type barrels. 
 NOT suitable for small block PX125 or 150 or kits, these take 15mm circlips
 
 
Come as a pair.