Dread cuffs come in packs of 20 and measure about 1 cm in diameter when they're completely closed. They're easily bendable, though, so you can squeeze them onto larger dreads if you leave a small gap in the back, or you can double up two at a time and make one really big cuff instead.
Size: 10mm x 8mm.
Brand: I Kick Shins.
Color: Antique Brass.