FIVE sheets of ONE sided professional hair extention tape. 
Each sheet has 12 strips that are 1.5long  x 0.3 inch wide, which are the same dimensions as Tape-in Tinsel Extension tape strips as well as tape hair extensions.  60 total strips.
These are very useful and extremely difficult to find.
The most common use is to sandwich a light layer of hair between a tinsel or hair extension weft and a piece of one-sided hair tape. 
In this way, clients can use just one strip of tape-in extension along with a piece of one-sided tape when attaching to the hair for long term use.
When tapes are fused onto hair with a flat or curling iron, they should be secure through washings for a few weeks.
You can use it with a weft/strip of tinsel extension or hair extension.