Freewheel Clutchs, One-way clutch, sprag type freewheel clutchs, roller type freewheel (CSK HF HFL BWTFS ... .The size from 10mm to 3500mm. Freewheel Clutchs, One-way clutch, sprag type freewheel clutchs, roller type freewheel (CSK HF HFL BWTFS ... to the markets of USA, Canada, Austria and Italy. Freewheel Clutch