Aluminum 60 mm trumpet for Dellorto PHBH carburetors.
Milled from a solid piece of aluminum with a crimped-on gauze.
M42 x 1.25 threaded connection.
The gauze adds some 15 mm to the length of the trumpet bringing the overall length to some 75 mm.
The diameter at the gauze end is some 75 mm.
Required quantity per carburettor: 1
This is item number 73 in the drawing.