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https://detail.1688.com/offer/611740892071.html?spm=a2615.7691456.autotrace-offerGeneral.7.3a282d7bhG5BUH

It is made of semi-cotton and semi-rubber, suitable for use in all seasons. The cotton-containing yarn has a good anti-slip and sweat-absorbing effect.

Standard size:

Gray length: 26.5 cm;

White-green, white-red length: 27 cm;

Approximate weight: 53+-3 grams;

The diameter of the top cover: 28 mm;

Mounting rod diameter: 60R;