This aluminum milking bucket with SS attachment, it is overall extrusion, the capacity has 3L,5L,10L,16L,20L,25L,30,32.5L,40L,50 This aluminum milking bucket with stainless steel attachment, it is overall extrusion and seamless, the capacity has 3L,5L,10L,16L,20L,25L,30L,32.5L,40L,50L etc, your customized bucket is also available. aluminum milking bucket with lid