This is a set of 30 rolls of masking tape. Width: 50mm, Length: 25 meters. Easy to use, with little to no adhesive residue left behind when removed from floors, windows, etc. (Although, leaving it for about six months might leave a tiny bit!) Can be used for various purposes such as packing cardboard boxes and preventing glass from scattering. Not recommended if you are looking for strong adhesion. It's designed to be easy to apply and remove! The tape leaves almost no adhesive residue! Thank you for your interest.