7 Speed hyperglide Screw On Freewheel from Shimano.

Ideal replacement for Mountain and Hybrid Bikes.

• A reliable 7 speed screw-on freewheel
• Hyperglide gear sprockets ensure accurate and smooth shifting every time - up or down the gears
• Compact and convenient unit for 7 speed gear systems
• Multi-freewheel design means the whole unit is simply screwed onto a compatible hub
• Suitable for a wide range of bikes
• For use with Mountain & Hybrid bikes.
• Replacement for Shimano Freewheel - MF-TZ21
• Sizes Available: 14-28 Tooth or 14-34 Tooth