This is a Brother International 0.23" x 4.9 Ft Black On White Heat Shrink Tube Cassette. Its part number is HSE-211. HSe is a printable heat shrink tubing designed to mark cables, fiber and wires.

Specifications:

• Color: Black on White
• Dimensions: 58.80 in L
• For Use With: PT-E300, PT-E500, PT-E550W, PT-P750WVP
• Tape Length: 0.23 ”
• Size: 0.23 in x 4.9ft in
• UPC Code: 012502635222