Replacement 27mm Adjustable Seat to suit
RT919-08 - Bridge For Adjustable Seats

also in:
RT919-40 - Radiator Tank Adaptor
RT919-45 - Standard Tank Adaptor

Used with the RT919-P1 or RT919-T1

This adaptor also comes as part of the RT-919C
Can be an add-on for RT-919F or RT-919J

Barcode # 9322159779813