Cast aluminium straight reducer with 2.5" on one end and 3" on the other. Ideal for turbo intercooler installs where a change of size is required from turbo to intercooler pipe work. Very compact and far neater than the fabricated cut and shut versions available. Has ribs cast in to aviod hose slip. As used in the HKS / Trust / Greddy turbo kits.This can be cut and welded to compressor housing or intercooler etc