| http://www.w3.org/ns/prov#value | - Alternatively, and in order to provide a tool which is easier to construct and one which is particularly well suited for the use of the annular end surface 33 of the tool for reduction of the tooth surface, transverse wall 22 may have a central port 30 in direct communication with bore 21 and/or ports 31 formed therein and communicating with space 24.
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