The staples is w waste on money. A standard 3" masking tape roll will not fit without rolling about half of the tape off the roll. Then when I finally got the roll on the dispenser it would not turn. Don't purchase.
I purchased these dispensers for 3" core tape rolls in my lab but as most others already pointed out below they are too shallow to accommodate regular 3" rolls (like masking tape). If your tape roll is already used halfway then it should be fine. I ended up using the dispensers for small tape rolls (1" core) and it works fine but that wasn't the intended purpose. Also one of the dispensers leaked sand all over the box it was delivered in so while they are sturdy enough the construction quality is not great.
Once you get the roll of tape in the dispenser works fine. However there is a piece connected to the plastic core that won't allow a full roll to be inserted. Nearly half of the tape has to be aready used before the roll will fit.