Free, basically Super duper aluminium tape. Found a bit in one of my many gear/ MYOG boxes. Guessing 10 foot in length? Free, just pay me the postage of your choice. @Chiseller , @Diddi , @Henry, @JKM and @Shewie have had it off me. Not your average foil tape. Join the gang and rip out your dentures for postage only circa £2?