ROCKBROS Bike Rollers Adjustable Bike Trainer Stand Foldable Indoor Cycling Bicycle Roller with Resistance for MTB Road Bike Exercise

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SAFE: Parabolic rollers enhance stability and are safer than straight rollers, choosing a safer indoor bike training rollers
DURABLE & FOLDABLE: High-strength and high-end aluminium alloy roller bicycle trainer, with three aluminium rollers mounted into an adjustable frame to hold bike wheels. Never worry about our quality.This roller trainer is foldable, handy and save space
SEALED BEARING: Bike roller with sealed bearing makes this roller trainer works more smooth
LIGHT WEIGHT & PORTABLE: 3 folds flat and lightweight ( only 6.5kg/pair ) design for easier storage and carry
COMPATIBLE WITH: The front adjustment holes with measuring cylinder can adapt different bicycles wheel,suitable for mountain bike,700c road bike, folding bike size between 16-29″