1.7 Speed Multiple Freewheels 14/28t Index MF-TZ21 Key benefits - Versatile 7-speed gear range: 14 to 28 teeth provide a low gear for steep climbs and a high gear for flat sections and cruising. - Reliable indexed shifting: designed to work with standard 7-speed shifting systems, delivering smooth and predictable gear changes. - Easy installation and replacement: screw-on freewheel for simple mounting on compatible hubs, suitable for routine maintenance or upgrades. - Durable construction: metal Freewheel built to withstand regular riding conditions and gear transitions. - Compatible with Shimano/MF-TZ21 systems: specifically matched to 7-speed drivetrains that use the MF-TZ21 indexing, ensuring consistent performance with related components. Technical specifications - Speeds: 7 - Teeth range: 14T to 28T - Freewheel type: index, screw-on - Model: MF-TZ21 - Material: steel construction (durable, long-lasting) - Compatibility: standard 7-speed drivetrains that use screw-on freewheels; suitable for Shimano/Tourney style systems and similar 7-speed hubs Performance and benefits in practice - Smooth gearing for everyday riding on flat roads, gentle descents, and moderate hills. - Quick replacement when a worn or slipping freewheel is encountered, restoring shifting performance without complex setup. - Suitable for upgrading older bikes or configuring a spare for maintenance, ensuring you can ride with a reliable 7-speed setup. Use scenarios - Commuting with hills: replace a worn freewheel on a daily rider to restore easy climbing and steady cruising. - Upgrading an older 7-speed bike: install the MF-TZ21 to achieve a full 14-28T range and improved shifting consistency. - Spare parts for shop or repair: keep as a standard 7-speed option for customers needing a reliable, widely compatible freewheel.