Duck Brand Standard Tape Gun Dispenser For Packing Tape Rolls Up To 2 Inch Wide (394600) Designed for use with most packing tape rolls Great for packing, mailing and moving Holds 3 in. core tape up to 2 inches wide Turn the adjustable tension control knob to the right to tighten if tape unwinds too quickly and turn the knob to the left to loosen the tape release for smoother dispensing Durable for heavy duty performance