Extra outer Cups and Mixing Collars (also available in the Mini PPS Introduction kit). With a pre-printed fluid level scale on the outer cup, the Mini PPS Lid and Liner sits perfectly within the cup before being secured with the threaded collar. 

• Outer mini pps cup for use with mini pps lids and liners
• Easy assembly with pre printed fluid volume scale
• 2 x cups and 2 x collars per selling unit