The G42 rims have a 42mm profile, stainless-steel spokes, sealed bearing hubs and triple aluminium walls. It is a wider edged than the Weinmann dp18 rims with more aluminium to show off the colours. This makes is a little more aggressive and flashy. The hub has coaster brake, so if you pull back the pedals the bicycle will be brake.G42 rims stand out as excellent quality for money. The size is 700c, meaning it is compatible with all road-bike tyres. You can mount 23, 25 or 28 tyres and will need a 60mm-valve inner tube. And it is crucial you mount a rim strip between the tyre and the inner tube to reduce or prevent punctures.