1. For just about every road & track pedal that Wellgo makes, they offer a high-end version with ball bearings and aluminum end-caps, and a low-end version with sealed bearings and plastic dust caps. The high-end pedals usually cost $15-$20 more. For pedals with ball-bearings, the model name has a 'b' at the end, for example, R025 track pedals (with sealed bearings), R025b (with real ball bearings and aluminum dust caps).2. Sealed bearings often feel tight when first assembled. It is better to have a bearing that is too tight at the outset than too loose. After 500-1000 miles, both pedals should spin freely. A lot of people writing negative reviews are not aware of this.3. I see a lot of misinformed reviews and since I could not contact the reviewers to tell them about this, I wanted to point this out. I have used Wellgo R-111 road pedals (non-b / cheap versions) and have been extremely happy with Wellgo's build quality at rock-bottom prices.