The brother pc72rf 2 ribbon refill 163241 works independently this offers a lower cost solution to other varieties which use two combined units the benefits of the dr2000 are that it does not have the drawback of one unit running our and both having to be replaced simultaneously it reduces wastage saving resources and making it the greener choice and is substantially the cheaper option but don39t be tempted to cut corners by using cheap consumables as this can mean poor results