If you really need small ice cube trays these will be fine. I bought 4 (2 sets) and found that they really didn't stack well when there were 4 of them. The design of the little tab that lets them stack is pretty poor -- if the tray is curved slightly then the tray won't stack right and the cubes below will be touching the plastic above and the whole stack will be lopsided. 2 of the trays I bought were curved so much that they wouldn't stack properly at all (even when full). The seller offered to replace them if I returned them, but for $3 what's the point of spending $5 to get new ones? I think I'll buy some bar supply trays instead. On the plus side, the cubes pop out really nicely.

THESE LITTLE CAMCO MANUFACTURING COMPANY, INC., MINI ICE-CUBE TRAYS,
No. 44110, ARE MARVELOUS! In a pretty light blue colour, each genuine plastic, (NOT, thank heavens, silicone!) tray holds 21 small ice-cubes, about 3/4 inches across. The trays themselves are 9" x 4" x 1". As the
label says, these small ice cubes freeze FAST. The label also says they
made for small freezers....and definitely, their small size will be a
TOTAL delight to anyone with a freezer so small that regular-size ice-
cube trays take up 1/3 - 1/2 (or more, of one's available freezer space. These are, thankfully SMALL trays, not tiny ones....and the
9" x 4" x 1" size, is easily handy for even the biggest hands to use.

However, this is not the end of the delights in these trays. The
pretty little "cubettes" that spring from the tray when frozen, really
do come out easily! Just wait about 30 seconds...and they come out
without a hitch! They resemble a pyramid whose top has been cut off
when they come out, and are a little less than 1/2" across.

Small, and/or tiny ice-cubes, (or "cubettes"!) are the PERFECT thing
to make any drink cool quickly! These handy, inexpensive little ice
-cube trays produce small size cubes which do just that!

Rich people usually want, WHAT they want, WHEN they want it! These
cubettes QUICKLY freeze, and QUICKLY cool drinks. Rich people also tend to have bigger refrigerators than those who are middle-class or poor...but everyone can use more freezer space! So -- these ice cube
trays ae just right for EVERYONE! If you're rich, you might want to get
thirty or more packs of 2. If you are poor, you might want to get just one or two packages....but it is a truly wonderful thing, I think, for a
poor person, or a rich person, to suddenly see "their" ice-cube trays, sitting nicely in the freezer of another person, who happens to have
have less, or more money than they have! These moderately priced, and
useful, indeed ice cube-trays can thus also really help to bridge the "people gap" between
the economic classes! They are a conversation-starter, and a way for
people to see that, rich or poor, one is still a member of the same
Human race...with the same ambitions and desires that all other Humans
have! Anarchists and revolutionaries, (and snobs, too!) take note --
killing off the "other class" may not be necessary! Just realize how
much everyone has in common! And these pretty, (and useful!), little ice-cube trays are a great way to start! : )

We have been very happy with these ice cube trays. My wife makes a lot of "smoothie" drinks and these smaller ice cube trays make for great little ice cubes that blend up really nice. I recommend them for smoothie enthusiests.