WHAT CAN YOU SAY, DIFFERENT SIZES FOR WHATEVER YOU NEED. I REALLY LIKE THEM, I HAVE SIX IN TWO DIFFERENT SIZES. I JUST WISH THEY WERE A LITTLE CHEAPER, BUT YOU GET WHAT YOU PAY FOR. I ALWAYS SAY IF YOU HAVE TO WORRY ABOUT THE PRICE DON'T BUY IT. BUT TRUTH BE TOLD THESE ARE REALLY GREAT. JUST CHECK INSIDE AND OUTSIDE DIMEMSIONS.