Specification:

Material: PEI

Size: OD 7.7mm

Thickness: 4.92mm

Features:

✅Bearing custom NSK, bearing precision p5-8000 New design: the nut completely locks the bearing, and the bearing bracket nut are combined into one

✅Special colors: amber and white. Amber will oxidize and darken during use; white has no sense of transparency and is truly pure white.