| 摘要 |
A cassette base includes a lower wall, two side walls perpendicular to the lower wall, a front wall perpendicular to the lower and side walls, and a rear wall opposing the front wall and perpendicular to the lower and side walls. An insert area is disposed on the lower wall adjacent the rear wall for receiving a reel brake mechanism. The insert area includes a front wall and two opposing side walls. Each side wall has a notch for receiving and holding a reel brake mechanism and is spaced from the base rear wall. At least one strengthening brace connects the rear and lower walls.
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