| 摘要 |
PROBLEM TO BE SOLVED: To provide a file suitable for suppression of mold investment, by solving the problem that a relatively large-sized mold becomes necessary for manufacture of a file with a hand hold.SOLUTION: A file F comprises: a cover body 1 that has a backbone 13; a back member 2 that has a hand hold 22 and that is provided separately from the cover body 1 spliced to an outer surface of the backbone 13; and a back member fixing element 3 that is arranged inside the cover body 1 and detachably engaged with the back member 2 via the backbone 13. |
