【Dimensions and specifications】:OUTER DIAMETER: 1.74 inch/44.5, INNER DIAMETER: 1.28 inch/32.5mm, BALL DIAMETER: 5/16 inch. Please confirm whether this size is suitable for your bicycle before you buy them!!!!!!!!!!!!!!

【Application:】: This kind of ball bearing stainless steel ball inlaid in the retainer design,It is a bicycle parts, it's suitable for replacing the crank bearing of the bicycle.

【Material】: This ball bearing retainer made of steel, high quality, durable and high intensity.

【Widely usage】: This beads rack for bike parts replacement, suitable for ordinary bicycles, mountain bikes, adult bicycle, lowrider bikes, stretch bicycles.

【Satisfaction guarantee】: Your purchase is fully protected when you order today. If you are not satisfied with with our products, contact us any time, We will get you back within 24 hours try our best to make things right.