VALLEY HILL Flying Items 17 BB Crossbar II 6000

High-precision stainless steel ball bearings are installed on both sides of the crossbar. This dramatically improves the smoothness of the cast and contributes to the distance. The gear is fixed with a screw, not with a one-piece rivet, so it can be separated for maintenance and the ball bearings can be oiled. Size: 4000, 5000, 6000