Geeetech NFC-tag for spools

this is  a useful  little print only takes 3 minutes to print and 1.6g of filament a full build plate in 30 minutes so quick a easy i use it with spoolease and it works great  tag never come off until spool finished then simply unclips ready to be used on the next spool. tags are from amazon link…http://amzn.eu/d/cJxfiRV 

they stick into tag holder perfectly.