Now for the negatives:
The supplied Bügelchen not fit with most wheels.
Either too big - or even worse: too small or too short.
(You can not turn so tightly there anyway!) Especially in the modern aluminum frame, MTBs, pedelecs etc ..
The chance that the strap 100% fit and thus offer the Necessary strength is manifested low.
In my case, the brackets were too short, a safe tightening the nuts was impossible.
Therefore, the entire Porter sense.
Also I noticed, then the Bügelchen and mother weight're really for the alleged 8 to 10 kilos of very modest.
Here I can not recommend the purchase, especially since the return postage accounts for 50% of the purchase price and you can already dispose of the part because almost. Seller Digi-trend does not replace the Retourekosten.
Tip:
Walk into a bicycle shop who there a large catalog for inspection with more models than here.
I did that, and the technician on site had me equal to the right model recommended - almost identical to this, only with attachment to the front wheels and not on the handlebars - other things being equal.
The whole cost me 10 more than online (incl. Reasonable professional installation), is well stable and also looks good.
From the presentation of the Porter deserves 4-5 stars, only the benefit was - at least in my case - only 1 star and I rate here. The same model with mounting on the wheels I would give 5 star (only here not available).