Cassette Shimano TZ510 7-Speed w/Protector Silver

The Shimano MF-TZ510 is a 7-speed thread-on multiple freewheel for bikes with freewheel-type rear hubs, common on kids', comfort and entry-level bikes.

• Speeds: 7-speed
• Range: 14-28T or 14-34T (choose your option). The 34T MegaRange cog gives an easy climbing gear.
• Includes: Spoke protector
• Finish: Silver, with better corrosion resistance than the MF-TZ500