Need to lift your blower shop supercharger? This sand cast spacer is 29mm thick has polished outer edges, is machined and drilled with clearance holes for use with longer 8mm bolts or studs. Supplied with dowel pins to keep the supercharger alignment correct. You are buying the spacer and dowel pins only, gaskets and mounting bolts not included. The spacer can be used with the o-ring on the manifold and will require an o-ring groove to be machined on the supercharger side of the spacer, or AS0145 Aussiespeed paper gaskets can be used in place of o-ring.