RM-71AA-Exercise Bikes / Spin Bike / Indoor Bike / Stationary Bike Smooth and quiet for comfortable riding.Rear drive magnetic brake systemSpin Bike / Exercise Bike / Indoor BikeFeature :* Belt transmission. Magnetic Braking system.Durable grooved V-Belt direct drive
STD-38-Exercise Bikes / Spin Bike / Indoor Bike / Stationary Bike Application: Home Use.Chain direct drive system.Chain transmission.Seat post set - HeightForwards / Backwards positions adjustment.Handle bar setHeight position adjustment by quick release.Flywheel14k
STD-68UA-Exercise Bikes / Spin Bike / Indoor Bike / Stationary Bike Application: Home Use.Chain direct drive system.StableStreamline design.Chain transmission.Sweat resistant - Fender on top and two sides of flywheel, Square steel construction on Handle bar set, stemS