Asc365 Keychain 37mm 1-1/2" Supplies 100sets for Pro Maker Machine Commerciadiy NOTE:Our button supply only fits for our button maker, before you buy it please make sure you know that. thanks. Any question, just please contact us.we will try our best to help you. Complete set includes 1 Shell, 1 Mylar, 1 keychain and 1 back.100 Sets per package.Shell Size:1-1/2" (37mm).Mylar Size:48.5mm Light-Easy to carry and ship saving. All metal parts provide a high quality than other plastic one. Note: The Supplies only fit for our following Pro Button Maker