The pack arrived promptly, without issue and with all necessary components for the repair on hand. The repair kit is fit for purpose, however there appears a slight looseness to the slider after the repair was done (DT 770 Pro 80 Ohm). This could however be due to the variety of Beyerdynamics models that this repair kit covers. It is quite easy to over-tighten the Torx T10H screws, so this is something to be aware of as over-tightening can result in splitting the housing they tighten into thus breaking the slider kit. Overall, it is well constructed, fits quite well and is quite simple to assemble.