Specification: Condition: 100% Brand New Construction: Rear Derailleur Cage Pulley Gear: 17T Color: Red Size: about 140.7mm x 86.8mm / 5.54'' x 3.42'' Material: Carbon Fiber Frame, Ceramic Bearings, 7075 Aluminum Alloy Guide Wheels Fit For Shimano R7000 Feature: 17T large guide wheel system, large chain movement trajectory, stable and fast speed change, chain trajectory presents an S-shape, reducing chain friction, and riding more labor-saving The use of all-ceramic non-resistance bearing can more precisely fit the chain, reduce the lateral virtual position, shorten the speed change response time, and improve the speed change efficiency .
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