other 【Lightweight and durable】 Qualified aluminum alloy material, solid and durable, and is made with fine workmanship, lightweight and durable. 【Waterproof and dustproof】 Separate rubber seal, internal spring, to prevent water and dust, super waterproof and extend the service life. 【Ease of installation and operation】 Smooth rotation, ease of installation and operation, which makes pedaling more labor-saving-Provides greater transmission of force from the pedal. 【Smooth rotation and wide application】 Smooth rotation, easy installation and operation. Applicable for Shimano supplementary crankset, pinwheel, FSA supplementary crankset, Sunrace and SRAM hollow crankset etc. If only the diameter of the cylinder in the hollow chock is about 24 mm. 【Good Service】 If you have any problems with this product, you can contact us at any time.
Returns Accepted for this item if it's within 30 Days