±æÀÌ¹×Æ÷Àå ¿É¼Ç ¼±Åà 3/16(4.7mm)/100°³ 1/4(6.3mm)/100°³ 5/16(7.9mm)/100°³ 3/8(9.5 mm)/100°³ 7/16(11.1mm)/100°³ 1/2(12.7mm)/100°³ 9/16(14.3mm)/100°³ 5/8(15.8mm)/100°³ 3/4(19mm)/100°³ 7/8(22.2mm)/100°³ 1inch(25.4mm)/100°³ 1-1/4(31.7mm)/100°³ 1-1/2(38.1mm)/100°³ 1-3/4(44.4mm)/100°³ 2inch(50.8mm)/100°³