“YO线圈”详细介绍
双线圈规格:
规格 [圈径] 装订厚度
3:1
1/4 [6.4mm] 4.5mm
5/16[7.9mm] 6.5mm
3/8 [9.5mm] 7.5mm
7/16[11.1mm] 9mm
1/2 [12.7mm] 9.5mm
9/16[14.3mm] 10.5mm
2:1
5/8 [15.9mm] 12.5mm
3/4 [19.0mm] 14.5mm
7/8 [22.2mm] 17.5mm
1/”[25.4mm] 2mm
规格 [圈径] 装订厚度
3:1
1/4 [6.4mm] 4.5mm
5/16[7.9mm] 6.5mm
3/8 [9.5mm] 7.5mm
7/16[11.1mm] 9mm
1/2 [12.7mm] 9.5mm
9/16[14.3mm] 10.5mm
2:1
5/8 [15.9mm] 12.5mm
3/4 [19.0mm] 14.5mm
7/8 [22.2mm] 17.5mm
1/”[25.4mm] 2mm