| http://www.w3.org/ns/prov#value | - In one embodiment, distal region 42 and intermediate region 44 are formed of materials such as polyether ester elastomer (for example, ARNITEL???, available from DSM Engineering Plastics), a polyester elastomer (for example, HYTREL???, available from DuPont Corporation), a polyether block amide (for example, PEBAX???), or Nylon.
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