| product Number | kind | model | detailed description |
| EC21010101 | children's Standards | S | with oxygen connecting pipe |
| EC21010102 | child lengthening | M | with oxygen connecting pipe |
| EC21010103 | adult Standards | L | with oxygen connecting pipe |
| EC21010104 | adult lengthening | XL | with oxygen connecting pipe |
| EC21020101 | children's Standards | S | without oxygen connection tube |
| EC21020102 | child lengthening | M | without oxygen connection tube |
| EC21020103 | adult Standards | L | without oxygen connection tube |
| EC21020104 | adult lengthening | XL | without oxygen connection tube |
| EC21030101 | children's Standards | S | with oxygen connecting pipe and carbon dioxide test line |
| EC21030102 | child lengthening | M | with oxygen connecting pipe and carbon dioxide test line |
| EC21030103 | adult Standards | L | with oxygen connecting pipe and carbon dioxide test line |
| EC21030104 | adult lengthening | XL | with oxygen connecting pipe and carbon dioxide test line |