(MEUL002-02) Aluminium reduction rings for diamond and Borazon wheels. Ext. diameter Int. diameter Thickness Code 20 16 4 MEUL20/16/4 25 20 4 MEUL25/20/4 32 12 8 MEUL32/12A 32 16 8 MEUL32/16A 32 20 8 MEUL32/20A 32 25 7 MEUL32/25A 40 32 10 MEUL40/32A