Installation guides:
Step-1 Shake the toner from side to side for 3-5 seconds to make toner well-distributed.
Step-2 Pull off the seal tape from side of the toner.
Step-3 Remove orange protective cover from toner.
Step-4 Insert toner cartridges into drum unit (not included) until it clicks into right place.
Step-5 Insert the drum unit (with the toner installed) into your printer.
Package includes:
1 x User Guide
4 x TN660 Black Compatible Toner Cartridges
2,600 pages per black tn660 toner
4 Pack tn660 cartridges can print at least 10,400 pages!