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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:

Length approximately: 27 cm;

Approximate weight: 51+-3 grams;

Diameter of the top cover: 27 mm;

Mounting rod diameter: 60X (with spine line, green line is spine line);

The size of the bold model is about 2 mm thicker than the standard model, the diameter of the mounting rod remains the same, and the material remains the same