材料有碳钢，轴承钢，不锈钢，铜等
钢球波珠直径如下：
0.397mm
0.500mm
0.794mm
1.000mm
1.191mm
1.500mm
1.588mm
2.000mm
2.381mm
2.500mm
2.778mm
3.000mm
3.175mm
3.500mm
3.969mm
4.000mm
4.500mm
4.763mm
5.000mm
5.500mm
5.556mm
6.000mm
6.350mm
6.500mm
7.000mm
7.144mm
7.500mm
7.938mm
8.000mm
8.500mm
8.731mm
9.000mm
9.525mm
10.000mm
10.319mm
11.000mm
11.113mm
11.906mm
12.000mm
12.700mm
13.000mm
13.494mm
14.000mm
14.288mm
15.000mm
15.081mm
15.875mm
16.000mm
16.669mm
17.000mm
17.463mm
18.000mm
18.256mm
19.050mm
19.844mm
20.000mm
20.638mm
21.000mm
21.432mm
22.000mm
22.226mm
23.000mm
23.020mm
23.813mm
24.000mm
另供应所有小螺丝，螺母，不锈钢螺栓，做库存，需要请来电，东莞德驰五金，13412344576。QQ66610202王先生
