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规格/Model	W1	W2+W4	螺丝/screw
mm	厚*宽/thickness *wide	厚*宽/thickness *wide
17-19	0.6*18	0.6*18	M5
20-22
23-25
26-28
29-31	0.8*20	0.6*20	M6
32-35
36-39
40-43
44-47	1.2*22	0.6*22	M6
48-51
52-55
56-59
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