Universal Reducer.
This Reducer consists of 5 pieces which can be joined and used as a single reducer or split to give a variety of options.
The fittings are all tapered so a millimetre each way should be OK to give decent fit.
Can be used to reduce form 100mm diameter hose down to:
Outside Diameter 104 68 45 40 35
Inside Diameter 100 62 40 34 28