RMENOOR Bicycle Bottom Bracket Square Hole Crank Axis 68*122mm Axle Sealed Road Bike Bottom Bracket with Spindle Mountain Bike Center Shaft With Wrench&Waterproof Screws for Mountain Bikes,Road Bikes

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• 🚲【Carbon Steel Material & Durable】RMENOOR Bike Bottom Bracket is made of high-quality carbon steel, which is sturdy and durable, well-made, smooth and no abnormal noise.
• 🚲【Square hole design】The square hole design of this Bike Bottom Bracket can not only protect the frame and provide more power, but also ensure the smooth and stable rotation of the central axis, and the waterproof screws prevent the bracket from corroding.
• 🚲【Bicycle Bottom Bracket Set】This set includes 1 bicycle bottom bracket, 2 waterproof screws and 1 wrench.
• 🚲【Easy Installation & Sealed Bearings】RMENOOR Bike Bottom Bracket is easy to install, after adjusting with screws and wrench, it can fix the mountain bike firmly without shaking, ensuring the bearing rotates stably.
• 🚲【Suitable for 68mm Bottom Bracket】This bike bottom bracket kit has good compatibility, bottom bracket with square pin for 68mm bike bottom, can be used to install and maintain mountain bikes, road bikes, etc.