| 摘要 |
The key, made from rigid metal wire or from a stamped, molded or injected material, has a main section (A) in the shape of a hairpin which fits over the closed end of the tube and allows it to be rolled, and a projection (B) which can be fitted behind the tube by sliding the main section, preventing the tube from unrolling. The ends of the wire used to turn the tube also act as a stand, allowing the tube to be stood upright when not in use. The wire can be coated after shaping with plastic or a precious or other metal, and in variants of the design the stand can be fitted with a personalized or publicity badge or logo, a suction cup or magnet.
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