Keenso Bike Cassette Freewheel, 11-42T, 12 Speed Cassette, Silver Sprocket for Mountain, Road Bikes and Professional Cyclists

• 【Hollow Design】High pressure steel plate, nickel and chromium plating treatment. With hollow design, weight reduction, super wear resistant steel.
• 【Nice Performance】The shift will be smoother and quieter.
• 【Premium Material】This bike freewheel is made by high quality chromium-molybdenum steel material, which is high strength and wear resistance, anti-corrosion and sturdy. It's to use and can maintain a long service life.
• 【Suitable Case】The 9/10/11/12 speed freewheel is perfect replacement of old flywheel, perfect operation, for best performance and maximum safety and life. Suitable for mountain bike, etc.
• 【Guarantee】Our product have 180 days warranty, if you have any question about this product, please feel to contact us, we will try our best to help you solve your problem.

Bike Freewheel & 3 Accessories, 9/10/11/12 Speed 32/36/42/46T Road Bike Freewheel Cassette Sprocket Bicycle Replacement Accessories Feature: 1. The shift will be smoother and quieter. 2. Perfect replacement of old flywheel, perfect operation, for best performance and maximum safety and life. 3. Suitable for mountain bike, bicycle, etc. 4. High pressure steel plate, nickel and chromium plating treatment. 5. Hollow design, weight reduction, super wear resistant steel. Specification: Condition: 100% Brand New Item Type: Freewheel Material: chromium-molybdenum steel Color: as picture shown Speed: 8/9/10/11/12 Speed Diameter: 22.2 mm (standard) Option: 9S 11-32T, 10S 11-36T, 11S 11-42T, 12S 11-50T 9S 11-32T weight: 326g 10S 11-36T weight: 418g 11S 11-42T weight: 542g 12S 11-50T weight: 607g Package List: 1 x Freewheel 3 x Accessories