Three convenience sizes:

small: inside height 2 3/8in.(6cm), inside diameter 5 5/16in. (13.4cm). Can be used with 1-2 gallons (3.78-7.5 liters) of milk. 
  
large: inside height 3 11/16in.(9.3cm), Inside diameter 7 3/8in. (18.7cm). Can be used with 2-4 gallons (7.5-15 liters) of milk. 

(Out of stock until mid-May or earlier) 

extra-large: inside height 6in.(15.2cm), inside diameter 7 7/8in.(20cm). Can be used with 3-7 gallons (11-26.4 liters) of milk. 

Use cheese cloth (50 or 60 grade) to dress your cheese in these moulds.