You are buying a single 10x30cm offcut 

Perfect if you need to patch any missing tolex on your vintage cab / combo / amp

This is different from the modern stuff and has a heavy duty backing 

As used by 

Vox

LANEY 

Hiwatt

Carlsbro 

Matamp

Simms Watts

Sound City

Selmer 

Etc etc

Other amounts also available - message me with what your after