Size: about 0.5mm in diameter, about 150yards/roll(137.16m/roll). Material: these beading cords are made from nylon, with a nice satiny sheen, good hand feeling; wear resistance; not fading. Easy to Use: you can cut any length at will by scissors for your handmade crafts. It is flexible and easy to maneuver but stiff enough to tie knots and it will not break when pulled with bare hands. A great addition to your jewelry making supplies. Wide Application: great for beading, macrame knotting, Kumihimo and jewelry making, costume and garment making, tassels, wrapping, Chinese knot making, wind chime making, and even handmade sign making. With Spool: each beading cord comes with a white spool so that you can cut the length as you want and avoiding messy, it is convenient to use, organize and carry.