ZTTO ZT-12T Mountain Bike 12T Ceramic Bearing Derailleur Pulley Aluminum Alloy Guide Wheel Color:Black • BT233SA: 117x10x1mm

• BT233SA: 117x10x1mm

【Built-In Storage and Expandable Memory】With a 32GB TF card support (not included)

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ZTTO ZT-12T Mountain Bike 12T Ceramic Bearing Derailleur Pulley Aluminum Alloy Guide Wheel Color:Black • BT233SA: 117x10x1mmFeatures & Specifications Crafted with a sturdy aluminum alloy body and ceramic bearings, this derailleur pulley ensures durability and smooth operation for both mountain and road biking Featuring a CNC machined hollow structure and an anodized finish, this derailleur pulley is lightweight yet strong, offering optimal performance and longevity With a 4 5 6mm screw hole diameter for rear derailleurs and compatibility with 8 9 10 11 speed systems, this