ขนาด mm
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6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32
35,36,38,41,46,50,54,55,58,60
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ขนาด inch
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1/4,5/16,3/8,7/16,1/2,9/16,5/8,11/16,3/4,13/16,7/8,15/16,1",1.1/16,1.1/8,1.1/4,1.5/16,1.3/8
1.7/16,1.1/2,1.5/8,1.11/16,1.3/4,1.13/16,1.7/8,2",2.1/2
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