The Zirc Matrix Tape Dispenser contains one 28 yd. roll of 0.002" thin x 3/8" wide clear mylar matrix band. Band pulls out from under a U-shaped tab that creates a concave shape and continuous curve. Pressing harder on the tab increases band curvature. Built-in stainless steel cutting blade. Dispensers are only 2" square and can be snapped open to check supply level. Dispose of entire dispenser when empty.