| http://www.w3.org/ns/prov#value | - The rigid stem of the dynamic gripping elements makes it possible for a device to penetrate densely into a receiving material and especially receiving materials formed from woven, nonwoven or knitted fabrics, felts, paper, foam, leather, feathers, hair, mesh, and the like, and other such materials which may be fragile or frail or which have surfaces which are not to be impaired.
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