The listing is for the model shown in the picture opposite
Dimensions are given in the photo below
Универсальный адаптер для различных диаметров коллектора 35-51 мм
main hole 51мм
Dimensions are given in the photo below
the kit includes:-Exhaust
-screw
-ручки
-2 mounting springs
-2 handles
-Connection adapter from 51 мм, 38 мм