To prevent a support shaft from breaking during production and assembly. A transfer tool of the present invention is a transfer tool that allows a transfer tape fed out from a feed reel to be wound onto a take-up reel via a transfer head, and includes a rotation transmission means having a feed gear, a take-up gear, and an intermediate gear, that have a disc shape, and transmitting rotation of the feed reel to the take-up reel. The intermediate gear is rotatably supported by an intermediate support shaft, and the intermediate gear is provided with a stress relief means that relieves bending stress when the intermediate gear is attached to the intermediate support shaft.

A cassette unit is provided and comprises i) a supply roller, ii) a receiving roller, iii) a dispensing edge, and iv) a dispenser material strip comprising a multiplicity of adhesive elements arranged on a strip-type separation material, wherein the dispenser material strip is partially wound on the supply roller and fastened at one end to the receiving roller, the strip-type separation material is guided around the dispensing edge, between the supply roller and the receiving roller with respect to the strip direction, the strip-type separation material is guided around the receiving roller, or around the part of the strip-type separation material wound on the receiving roller, in front of the dispensing edge with respect to the strip direction, such that the receiving roller, or the part of the strip-type separation material wound on the receiving roller, acts as a deflection element for deflecting the dispenser material strip.