掌握自行车轮

At the workbench with Gerd Schraner (DT Swiss) and Alex Roussel (UCI).
　　A practical course to get to know everything about the wheels for road, track, MTB and BMX. Comprehensive for beginners and professionals.
　　Source: DVD
　　VIDEO: [MPEG] 720x576 25.000 fps ~3800 kbps
　　Aspect: 4:3
　　AUDIO: AC-3, 48000 Hz, 1 ch, 128.0 kbit/s
　　Languages: German, French, English, Spanish, Portuguese
　　Subtitles: none
　　Runtime: 01:54:56