Carb Spacer 4150, Professional step style - This 1" thick, billet aluminum, 4 hole spacer has a 7 degree taper through the stepped holes. It is for a 1.750" butterfly.
And here is a close up of a typical stepped wall.
Please note the base plate is for illustration purposes and is not part of the spacer set.
Please allow 1-3 weeks delivery depending on inventory