Dry head cleaning is virtually hassle-free. Simply insert the cartridge into your drive. The cleaning process itself is automatic and total cleaning time is as fast as twenty seconds versus five minutes for wet-type cleaners. When the process is finished simply rewind the tape and mark the date in the space provided. DLT tape drive head cleaning cartridge is compatible with DLL 2000 2700XT 4000 and 7000 series drives. Provides 20 cleanings.