100pcs in a bag, very useful for your flute. If you need other dimensions, please send me a eBay message after bid. Thank you! The thickness is 0.03mm 0.05mm 0.1mm 0.2mm and more. 

16.5*8

17.1*8

17.1*9.5

19.0*8

18.0*8

18.0*9.5

19.5*8

17.5*8

17.5*9.5

18.8*8