Diall 50mm Tape dispenser with 50m packing tape

bought this today and will be returning it asap. no instructions on how to load it, but found a you tube demo. you waste more tape trying to get the cutter to work, the guide is squint and therefore the tape runs off the roller. I ended up applying the tape by hand which was much quicker and less wasteful. a real waste of time, money, and effort.